Hello @Ronny Cornelis
As per GDAP docs ([https://learn.microsoft.com/en-us/partner-center/gdap-faq) : GDAP helps with customers who have regulatory requirements to provide only least-privileged access to partners.
So answer to your question is yes, you could assign least privilege roles to the partner as per your business need.
Kindly follow: https://learn.microsoft.com/en-us/partner-center/gdap-least-privileged-roles-by-task to assign the best suitable least privileged roles to the partners.
Thanks,
Akshay Kaushik
Please "Accept the answer" and rate your experience if the suggestion works as per your business need. This will help us and others in the community as well.