I have an application where I want to grant access to certain menu options depending on which machine it is on a network.

Whats the best way to achieve this?

I want a supervisor to be able to say MACHINE X in CANNING has access to the CANNING TAB for example or
machine Y is an administrator in the office so has full access to all of the programs.

Is the easiest way to detect the current users login name?

TIA