In the modern world of work, it's all about efficiency. With an endless stream of tasks, information, and to-do lists, it's essential to set up your workflows as effectively as possible. AI offers a huge opportunity for everyone in this, and one of the most powerful tools in this is Custom GPTs. These customized AI models can automate repetitive tasks for you. By breaking the steps you often take for work or hobby into small pieces, you can create specific assistants who carry out complex assignments in your specific way.
But how do you make sure that AI does exactly what you want? How do you set up your workflows so you don't waste valuable time writing elaborate prompts over and over again? Bee Synthwave Solutions for this purpose, we have the DUID method developed. This framework helps you write clear, targeted prompts that effectively control your Custom GPTs.
In this blog, you'll discover how the DUID method works, how to use it to optimize your workflow, and how our Custom GPT, the Prompt Engineer, helps you create new GPTs quickly and efficiently to automate your workflows and get more out of your time!
What is a Custom GPT?
Automating workflows with AI may sound like a thing of the future, but thanks to Custom GPTs, this is now easy to arrange for any professional. Custom GPTs are AI assistants that can provide you with special instructions and files so that ChatGPT can use all its intellect for the task you want to do. They are designed to perform specific and repetitive tasks.
The most obvious advantage of Custom GPTs is the enormous amount of time you save. Instead of writing a long and detailed prompt every time, you can train a Custom GPT that knows exactly what your work routines and preferences are. This means that you don't have to start over and over again, but can use a pre-trained model that understands your specific workflows and context. In addition to saving time, using Custom GPTs also offers a major advantage in terms of consistency. By providing established formats and guidelines, you can get strong output that is consistent and in line with your way of working.
Example:
Suppose you have to regularly develop intake forms in a standard format. Instead of creating a document manually each time, you can create a Custom GPT training that automates this process for you, exactly according to your method & format. All you have to do is provide relevant data, and the AI does the rest: from analyzing the data to generating a personal intake form that perfectly matches your way of working.
How Custom GPTs Simplify Your Workday
Think carefully about all the repetitive work you have to do every day: writing emails, drafting documents, analyzing data, or answering customer questions. These kinds of tasks consume time and energy, which is much better spent strategically on the human part of your work! Here comes the power of Custom GPTs in the picture. A customized GPT can help you by automating a large part of these tasks, allowing you to focus on the work that really has an impact.
With a Custom GPT that is specifically trained on your unique processes and way of working, you can automate tasks that would otherwise take a lot of time. But how exactly does that work in practice?
1. Automation of repetitive tasks

One of the biggest advantages of Custom GPTs is that they can take over repetitive tasks. For example, preparing standard emails, filling out standard templates, or preparing reports. One Custom GPT can perform all these actions independently, provided you control it in the right way.
Example:
You want to send a weekly update email to your team, based on data from different departments. Instead of manually writing these emails each week, you can Custom GPT instruct you to automatically collect the necessary data and create an email in the format you specified. All you have to do is send the email (or even that can be automated!).
2. Consistency in your work
Another advantage of Custom GPTs is the consistency they provide. Sometimes, for a big job, you have an enormous amount of data that you need. Think of previous proposals, transcripts, umbrella plans and other relevant documents. You can now create an assistant who specializes in your job and always has the relevant files and context at hand.
Example:
Suppose you have to regularly develop intake forms in a standard format. Instead of creating a document manually each time, you can create a Custom GPT training that automates this process for you, exactly according to your method & format. All you have to do is provide the relevant data, and the AI does the rest: from analyzing the data to generating a personal intake form that perfectly matches your way of working.
3. Workflow optimization in small steps
Custom GPTs are not only useful for large projects, they can also help optimize your daily workflows, step by step. A well-trained GPT can act as an assistant who thinks along with you and helps you break down complex tasks into manageable pieces.
Example:
Imagine you're working on a marketing campaign and you want to carefully plan every step of the campaign, from the initial strategy to the final evaluation. You Custom GPT can help you by structuring each part of the campaign. For example, it can automatically generate a list of action items, set reminders, and even assign tasks to team members. That way, you no longer have to worry about the minute details, but you can focus on the larger strategy.
By using these customized AI tools, such as Custom GPTs, your working day will not only be easier, but also more efficient and productive. You have more time for the tasks that are really important and can rely on your AI to do the daily maintenance work.

The strength of the DUID method
To get the most out of you Custom GPTs To achieve this, it is essential that you make the prompts clear and structured. Think of it as a ghost in a bottle, you can wish for anything, but how you express your wish is very important for what you get! This is where the DUID method helps. The DUID method stands for Purpose, Explanation, Instruction, Details and helps you think about what you want to achieve and how best to communicate that to your AI assistant. Let's look at the method step by step:
Goal
This is the first and most important step. The purpose of your prompt must be clear. What exactly do you want the GPT to do? Perhaps you want to have a report analyzed, a marketing text written, or summarize customer feedback. The more concrete the goal, the better the AI will perform. Think of determining the end result and the desired format you expect from the GPT.
Example:
You want your GPT to perform a marketing analysis based on customer data. Your goal could then be: “Create an overview of key customer trends based on feedback over the past year.”
Explanation
Here you provide the background information or context that the GPT needs to perform the assignment properly. By giving the GPT this context, you'll make sure that your assistant understands not only what to do, but why it's important. This helps the GPT generate better and more relevant answers for you.
Example:
“Over the past year, our company has been collecting customer feedback through various channels, including email, surveys, and social media. We want to analyse this feedback to understand trends in customer satisfaction and complaints.”
Instruction
This is the heart of your prompt. Here you give the GPT specific assignments. Make sure these instructions are clear and executable. Try to break complex tasks into smaller, manageable steps so that the GPT knows what is expected and works step by step.
Example:
“Analyze customer feedback and identify the three most common complaints and suggestions. For each complaint and suggestion, provide a brief summary and identify possible solutions.”
Details
Here you specify any additional information, restrictions, or concerns. Do you want the output to stay within a certain number of words? Should the GPT only focus on certain data points? These details ensure that the GPT focuses on what matters most to you.
Example:
“Up to 300 words per trend. Focus on feedback from customers who purchased a product at least three times in the past year.”
By building your prompts this way, you can be sure that the AI does the work efficiently and your way, without having to resort to long, complicated prompts over and over again.
The DUID method provides structure and clarity, which is crucial in driving AI models such as ChatGPT. By taking the time to clearly formulate your goal and make your instructions clear, you can significantly improve the AI's output. Plus, this method helps you write prompts in a consistent way, so you don't have to reinvent the wheel every time.

The biggest advantage? You can use this method to let ChatGPT write its own prompts for other Custom GPTs, which means you'll work faster and more efficiently as you automate more workflows.
Chapter 4: The Synthwave Prompt Engineer — Your Practical Tool for Custom GPTs
In the previous chapters, we talked about the DUID method and how you can optimize your workflows with Custom GPTs without having to write long prompts all the time. Now we are introducing the Prompt Engineer, our specially designed tool that helps you quickly and efficiently create new Custom GPTs that perfectly suit your needs.

What is the Prompt Engineer and why should you use it?
The Prompt Engineer is a customized GPT that we have trained on our DUID framework and all the insights we have gained from our 3 years of experience in AI. It's an assistant that helps you design and generate effective system prompts for your Custom assistants. The unique thing about the Prompt Engineer is that he not only writes prompts for you, but also thinks along with you to find the best possible solution for your specific situation.
Why use the Prompt Engineer
- Save time: You don't have to write elaborate prompts over and over again; the Prompt Engineer does the heavy lifting for you.
- Guaranteeing quality: Thanks to our investment in training this tool, you get high-quality system prompts that are effective.
- Ease of use: Whether you know exactly what you want or still need help developing your idea, the Prompt Engineer guides you through the entire process.
How to use the Prompt Engineer
The Prompt Engineer is easy to use and adapts to your needs. Here's how it works:
1. Get started right away with clear instructions
If you already know what kind of Custom GPT you want to make, you can use the Prompt Engineer give a clear assignment. He then immediately generates the right system prompt for you.
Example:
“Write a system prompt for a Custom GPT that rewrites my emails in my personal tone of voice, with a friendly and professional style. Here are example emails that I want to base the tone of voice on.”
Based on this instruction, the Prompt Engineer will create a complete system prompt for you, ready to use. You can fill in this prompt under the heading: instructions when creating a Custom GPT via ChatGPT
2. Interactive design support
If you're still not sure how to best develop your idea, the Prompt Engineer offers interactive support. Using the buttons, you can indicate that you want to brainstorm first or need help with the design.
Here's how it works:
- Click the button: “First, help me design my Custom GPT.”
- Design mode: The Prompt Engineer switches to a design mode where he asks you questions to better understand your needs and goals.
- Brainstorm together: He helps you refine your ideas and thinks along with you about the best approach.
- Result: Ultimately, he writes an effective system prompt that meets your specific needs.
Simplified sample conversation:
- You: “I want a Custom GPT that analyses customer interviews and summarizes key insights.”
- Prompt Engineer: “Are there specific themes or topics you want to focus on?”
- You: “Yes, I'm particularly interested in customer satisfaction and suggestions for improvements.”
- Prompt Engineer: “Understood. I'll set up a system prompt for you that includes these elements.”
3. Automatically generate the right prompts
After the call, the Prompt Engineer writes out the complete system prompt for you, including all details using the DUID method. You'll get a ready-to-use prompt that you can use immediately to activate your Custom GPT.
Practical applications of the Prompt Engineer
With the Prompt Engineer, you can automate various workflows and make them more efficient. Here are some suggestions for CustomGPTs that you can create with this:
Analyzing transcripts
Create a Custom GPT that automatically analyses transcripts of meetings or interviews and summarizes key points. This saves you hours of manual work and ensures consistent reports.
Converting intake forms into follow-up documents
Do you have standard intake forms that you need to process into personalized quotes or plans? The Prompt Engineer helps you create a Custom GPT that automates this process so you get professional documents with minimal effort.
Rewrite emails in your tone of voice
If you need to send emails frequently and want them to match your unique writing style, the Prompt Engineer can design a Custom GPT for you that rewrites your emails. This way, you always communicate consistently and effectively.
Feedback on proposals
Do you want honest and constructive feedback on your suggestions? Let the Prompt Engineer create a Custom GPT that reviews your documents and offers suggestions for improvement based on your criteria.
Proposal writing assistance
With a Custom GPT that helps you prepare proposals according to your format or structure, you make sure you don't overlook anything and always deliver a professional document.
This is just a short list of suggestions and the tip of the iceberg. We are happy to help you see how we can use this specifically for your work.
Case study: Efficiency in our own workflows
At Synthwave Solutions, we deployed the Prompt Engineer to streamline our own processes. For our workshops, we use the following workflow:
- Fill out the intake form
We start by filling out a standard intake form with all relevant customer information. - Generating a workshop outline
We upload the completed form to a Custom GPT, created with the Prompt Engineer, that automatically generates a detailed outline for the workshop. - Converting to a script
We enter the outline into another Custom GPT, also designed with the Prompt Engineer, who turns it into a complete script in Excel format.
By automating these steps, we've reduced a process that normally took two hours to just ten minutes. This allows us to focus on the content and quality of the workshops, while the logistical tasks are automated.
Getting Started with the Prompt Engineer
Ready to optimize your own workflows and save time? The Prompt Engineer is your partner in efficiency. click here to access the Prompt Engineer and see how easy it is to create your own Custom GPTs.
Tips for optimal use:
- Be specific in your instructions: The clearer you are, the better the Prompt Engineer can help you.
- Take advantage of design mode: If you're still exploring ideas, this feature can offer you lots of insights.
- Experiment with different applications: The possibilities are endless; from data analysis to co
Conclusion
Setting up workflows with AI is no longer for the future—it's a powerful tool you can use today. With the DUID method and the help of Custom GPTs you can automate repetitive tasks, bring more consistency to your work and, above all, save a lot of time. Our Prompt Engineer is your AI partner that makes writing effective prompts easy, so you can create new GPTs that do exactly what you need in no time.
Ready to get started on your own? Try our Prompt Engineer and see how easy it is to create Custom GPTs that can significantly simplify your workday. Do you need more guidance or advice on how to set up automated workflows with Custom GPTs? Then contact Synthwave Solutions. We're here to help you every step of the way, from strategy to implementation, so you can make the most of AI solutions within your organization.