You can go to the Users page, select a user, and go to the Applications tab where you can:
Remove the user from the company account (1).
Give the user access to an application (2).
See all the applications the user can access (3). If you select an application, you navigate to its details. For details, go to Applications.
Revoke user's access to an application (4).
Note: Only Tenant or Application Admin can give or revoke access to applications. Only Tenant or User Admin can remove users from the account.