Example :

You have set an idle time limit of 30 minutes to your users,
but it also applies to you as the admin if you are idle for more than 30 minutes.

How to make that NOT apply to administrators?

Solution :

First you need to re-init the settings you set in the AdminTool,

and follow this procedure : 

The GPO that you need to set by opening a local gpedit.msc on your TSplus server is the following :

Local Computer Policy / Administrative Templates / Windows Component / Remote Desktop Services / Remote Desktop Session Hosts / Session time limits