With Overview & Control you can easily manage all users.
As an Overview & Control Admin you have an overview of all internal and guest users and how many Teams, Groups and SharePoint sites they are member of.

Drilling down to a single User’s Access to manage membership
Clicking one User you can easily add or remove membership from current Teams, Groups and SharePoint sites.

Onboarding new users
New Users recently added to Company tenant can be given current memberships in multiple Teams, Groups and SharePoint sites in one operation. This is convenient wen wishing to onboard new employees and start working.
Adding external users
There is functionality for easily to add external users and add them to Teams, Groups and SharePoint sites as guest users