Need Help with User Access Management in SageMaker Studio

Hello AWS Community,

I am currently managing a small team on SageMaker and have encountered an issue that I need help with. I have set up a domain with three users. However, I’ve noticed that one of my team members, John, who logs in via IAM to launch Studio, is able to access the Studio apps of another team member, Maria.

This is a concern for me as I want to ensure that each team member’s work remains private and inaccessible to others unless explicitly shared. Therefore, I am looking for a way to block John’s access to Maria’s apps.

I would greatly appreciate any guidance or suggestions on how to resolve this issue. Thank you in advance for your help!

Best, Rodrigo