All questions related to installations, configurations and maintenance of Advanced Host Monitor (including additional tools such as RMA for Windows, RMA Manager, Web Servie, RCC).
Depends on level of permissions of that 'ignorant person".
You cannot hide anything from person that is logged in with administrators rights. Otherwise you may start RMA as service (regular user does not have rights to manage services so RMA will be safe)
Why not? Service does not show icon unless you use "local system" account and you have enabled "Allow service to interact with desktop" option.
Normally you should run RMA service under admins account with disabled "Allow service to interact with desktop" option.