CSUService.exe

Hi, I have a few questions about CSU services.

Here:
https://forums.comodo.com/beta-corner-csu/comodo-system-utilities-40-beta-released-t78574.0.html;msg562404#msg562404

Razvan Raschitor says that:

CSUService.exe is used for multi-user support, and CSU_CLI.exe is created when a user logs on and is used to pre calculate some thinks for the GUI in order to make it faster.

So, what exactly is the multi-user support? What does a multi-user system lose if this service is disabled or set to manual start?

And if the system is not multi-user, and the user doesn’t mind the program having to calculate everything on demand and thus take a little longer, is there any other functionality that is lost by disabling or setting this service to manual?

Thanks in advance.