I am managing other customers' Webroot consoles and just want to know if it is at all possible to get a common Admin Console to do all the customers with one logon.
Explanoit is spot on! Once you are added as a "User" in your customer's console(s), you will have a list of consoles you can access when you first login.
Endpoints update themselves automatically unless you disable the setting in the policy.
If for some reason they don't or you want to do it manuaklly, you can do manual updates by issuing a "Download and run" command to http://anywhere.webrootcloudav.com/zerol/wsasme.exe