Certain settings are universal for all users and can be accessed from user settings. Go to User preferences > Printer. [] Here you can set up the default printer settings. These settings will affect all users. []

Other settings can be changed for each print job. Call up the Printer Setup menu to change the options for this specific printing. For example when printing a invoice, you can choose Printer Setup from the print menu, change the letter size to Legal, then Save and print. []