Administration of licenses via an admin account?

Yes, as an account administrator at Zoom, you can assign licenses to different users and change that assignment at any time. So, for example, you can use five licenses for ten users by dynamically assigning the licenses to the users who need them and then assigning them to another user as needed.

Zoom's user management is especially useful for businesses and educational institutions that need to manage and monitor multiple user accounts. User management allows the administrator to create user accounts, manage permissions, configure settings, and generate reports.

There is no need to use specific email addresses for Zoom, but it can be a good practice to make it easier to manage Zoom accounts and emails. Such separation can help simplify account management and give users a clear view of which emails are from Zoom and which are not.