Distribution of rights (administrator and manager), how to implement it?

Question

PHP

Hello. I have never had to develop similar things before, so I ask you to help with advice.
The task itself is that there is an account, this is an administrator account who created a project in this account and works with CRM in it. How to make it so that the administrator can open access for managers? So that after authorization the manager would see the projects of this administrator and could manage these projects.
How to build an authorization system? General or separate for managers? This is handled by RBAC or perhaps something else. If anyone has experience please let me know how to do it.

Answer 1

I made a user_group field in the table, checked it for admin at the entrance. But it's more like access. For project management, RBAC is more likely. Although if there are few users, everything can be handled.