What NameSpace, NameSpaceID, Token, bit will give permission to Project Admins to add/Remove users

Is there someone who knows the NameSpace, NameSpaceID and/or Token and/or bit value that gives Project Admins in Azure DevOps permissions to add and remove users. I know only Project Admins have that permissions and other Security Groups don't have that permissions.

I know you can find all the NameSpaces here. These are the different level of Namaspace.

• Object-level
• Project-level
• Organization or collection-level
• Server-level (on-premises only)
• Role-based
• Internal only

I cannot point out in "Internal Namespace and Permissions" which particular one provides that access. It is not obvious.

Does anyone know what NameSpace, NameSpaceID and/or Token and/or bit will give permission to Project Admins to add/Remove users.