You will be prompted for the Supervisor password when you execute a command requiring supervisor privilege. You can explicitly logon as Supervisor from the Logon sub-menu in the PRS File menu commands.
The Supervisor logon is reserved for viewing and setting confidential or system administration parameters (for example consultant commission rates), it is also required to view reports containing consultant commissions.
Supervisor privileges will usually only be required by senior management and PRS system administrators. Logging in as Supervisor automatically grants Administrator privileges.