Deepening Legal prompting

COURSE

You've mastered the basics—now it's time for the next step. Do you already have experience with language models such as ChatGPT and want to further deepen your skills? Then this follow-up course has been developed especially for you. In this advanced course, you will learn how to use AI even more intelligently and effectively in your legal practice.

LONG

4 hours

LEVEL

Floor

LOCATION

The Hague

€475 excluding VAT

Small group (max. 15)

Hands-on, practical

PO/PE points: 4
(not legal / not tax-related)

About this course

Language models evolve at lightning speed. If you really want to make a difference, you need to go beyond the basics. In this course we dive deeper into the possibilities of AI and you will learn how to write complex(er) legal prompts, how to use deep research in your work and develop your own legal AI assistant.

What to expect.

  • Drafting complex(er) legal prompts

  • Deploying Deep research

  • Building custom GPTs

  • Chat GPT Projects and link files

This course is designed for lawyers who have already mastered the basics and are ready for a deeper dive. Whether you work as a lawyer, government lawyer, judge or policy officer - we will help you use AI at an even higher level in your work.

As with our basic course, the content is completely focused on legal practice. Our teachers - lawyers with a passion for technology - take you step by step and make sure you learn not only how it works, but why it works and what to look out for.

Technology changes almost daily. That is why we constantly update this course as well, so that you are always working with the latest insights and applications.

Make AI a full-fledged part of your legal toolkit.
Register now for the in-depth course and continue to build a smart, efficient and forward-looking practice.

What is on the program?

This advanced course consists of interactive sessions, hands-on assignments, and practical examples from legal practice. The focus is on deepening knowledge, application, and building reusable AI solutions.

Part 1: Drafting complex(er) legal prompts

Learn how to structurally improve prompts with techniques such as Prompt Chaining and Chain of Thought Prompting so that ChatGPT reasons better and delivers more consistent output.

  • Building blocks of a strong legal prompt

  • Prompt Chaining: breaking down complex tasks into logical steps

  • Chain of Thought Prompting: driving AI to better reasoning

  • How to write legal prompts that lead to more reliable and consistent output

  • Examples of legal prompts

  • Exercise: rewrite and improve an existing prompt using chaining techniques

Part 2: Deploying Deep research

Participants will learn during this section how to use ChatGPT's Deep Research functionality for legally relevant search queries, and how to assess the quality of the information.

  • What is Deep Research and how does it work?

  • What does it do - and what doesn't?

  • Why this position is relevant to lawyers

  • Prompt Techniques

  • Source criticism: how do you assess the reliability of AI output?

  • Demonstration: Deep Research in action

  • Best practices: which types of questions work well (and which do not)?

  • Exercise: draft your own research question

Part 3: Chat GPT Projects & link files

Learn how to use ChatGPT as a smart legal assistant by taking full advantage of the Projects functionality and file linking, so you can work efficiently with complex documents and information in one unified environment.

  • Why work with Projects and link files?

  • For what legal tasks are Projects ideal?

  • Roadmap: "This is how to make ChatGPT work with your documents"

  • Do's and don'ts

  • Prompt examples: how to ask smart questions about files

  • Integrating Projects into your daily practice

  • Exercise: set up and work with a project yourself

Part 4: Custom GPTs

Discover how to develop your own legal AI assistant with Custom GPTs, tailored to your practice.
Learn how to link instructions, style and documents, and build your own working GPT on the spot.

  • What are Custom GPTs and what can you do with them?

  • Concrete real-world examples (think case law summarization, policy review, translation, blog writing, memo writing, among others)

  • Linking files and knowledge to your GPT

  • Creating your own AI assistant: instructions, style, roles and delineation

  • Getting started: participants build their own custom GPT on the spot

For whom

This course is designed for legal professionals, including lawyers, judges, prosecutors, employees of the various ministries, employees of enforcement and investigative authorities, and compliance officers, who are interested in improving their understanding and skills in applying language models within their fields.

This course is also great for those who support legal professionals, such as:

  • Legal staff

  • Office directors

  • Secretaries

  • Personal assistants

Participants who want to take advantage of advanced technologies to increase their efficiency, improve their services, and implement innovative solutions in their daily operations will benefit from this course.

The program is also suitable for IT professionals within the legal sector who work with legal teams and are involved in implementing and managing AI technologies.

Your teacher

Joyce Boonstra

Voormalig advocaat, Legal Tech Expert & Trainer

Joyce combines two things that rarely go together: a legal background with in-depth technical knowledge of AI. She was one of the first lawyers in the Netherlands to structurally integrate language models into her daily practice. Not as an experiment, but as a working method.

While others were still waiting, Joyce was testing. She knows the possibilities and pitfalls of various tools firsthand. Not from theory, but from hours of practical experience.

That combination makes her training sessions different. No slides full of promises, but concrete applications. No hype, but nuance. And always the question: does this work for your practice?

Practical information

DATE AND TIMES

See below.

COSTS

EUR 475, excluding 21% VAT

METHOD OF PARTICIPATION

This course is only offered in person.

LOCATION

60 Koninginnegracht, The Hague

GROUP SIZE

Maximum of 15 participants

PO/PE POINTS

4 points (non-legal/non-tax)

TAKE WITH YOU

Your own laptop (not required/necessary)

FURTHER REQUIRED

ChatGPT account (not essential, but useful if you want to practice and apply what you learn during the course)

Dates & Registration

Thursday, April 16, 2026
, 9:30 a.m. to 2:00 p.m.

Thursday, June 18, 2026
, 9:30 a.m. to 2:00 p.m.

Thursday, October 1, 2026
, 9:30 a.m. to 2:00 p.m.