I'm sorry mate, but you still don't understand
I set up another admin account. This account cannot log in via remote desktop. I want to give the client, who logs in via remote desktop, the admin password, so he can install programs. However, because I am giving him the password he can basically change system settings and so on - and I want to restrict that admin user from doing. I want it to only be to install programs and that's it.
Please help me achieve this. Thank you in advance.