Under Administration, select Set default options.Note: If you get an error message such as 'cannot connect' or 'web interface is disabled', start the Terminal app (in Applications > Utilities) and enter the command: cupsctl WebInterface=Yes In a browser, go to the webpage 127.0.0.1:631/printers.This can be done through the cups interface. If you are prompted for a username/password, use the ones for your administrator account on your Mac, not your MIT Kerberos Principle.
You must be logged in with an account that has administrator rights on your Mac to change these settings. Change the default print settings on a Mac