In an artspace, I have a friend that I only want to access certain groups. Example: In a single artspace, I have three projects. ProjectA, ProjectB, and ProjectC. I want my friend to only be able to access ProjectB. How do I make that work?

When in a group it seems anyone can see a piece of art I made. What If I just wanted only one specific person in my art group to see it.

Useful to have different security settings available for each project within the workspace, so we can restrict access to certain users.

When i mean projects, i mean the #'s

You should be able to edit roles to have permission to specific projects. There should also be settings in roles, where if someone has that role they cannot go into some projects. This way, you can have projects (#) that only specific people with specific roles and get into, if the owner gives you a role and in that role settings you don't have permission to a certain project (#) its locked for you.