You can view users in your organization on the Team screen. To easier find and select users in your organization, you can enter their name into a search bar to see a filtered list of users.
Account Owners can deactivate users in their organization, which prevents them from being able to log in. To do so, find the user on the Team page or on the Admin/Users page, open the options for the user, and click “Block.” This will deactivate the user. You can then re-activate the user by going into the options menu again and clicking “activate.” Only Account Owners have this ability.