The fifth tab on the Administrator View is the Accounts tab. This is where Administrators can create or delete user Accounts, assign Account permissions, and sync with G Suite. (More integrations coming soon)
Accounts can be of two types:
An account can be assigned to one or more of the following groups (with the exception of assistants):
You can find more information on the permission associated with each group here.
For both of the following, the resulting table can be sorted by clicking the column header and searched/filtered by using the search bar in the page header
Clicking on an account will display it's profile. At a glance, you can see their name, email/username, sign-in status, last-sign in, and other relevant information.