Disable the option to modify the CAS trust level as customer/reseller level
As for the moment it's only possible to apply specific option to change server-wide the CAS trust level.
the option allows changing the CAS trust level for individual websites via tools & settings > ASP.NET, based on the documentation:
If you do not select this checkbox, websites will use the server-wide setting. Otherwise, each website will be able to have its own CAS trust level specified in the website’s hosting settings.
The idea is creature a feature/option to remove the option as customer or reseller to be able to change/modify the CAS trust level.
Thank you for your feature request. We will consider the possibility of its implementation if it becomes sufficiently popular and in demand.