This is where you manage users at the Tenant Level only
Leading practice is to manage users at the tenant level here including individual roles/setting values for a single tenant
Managing roles here for a single user, for a single tenant
This is an area where an admin can modify user specific settings - for this Tenant
The Users can generally update these setting themselves
After Setting is selected, depending on the setting you maybe prompted for the value to set.
This is user specific, for this single tenant
You can add/manage multiple user specific settings