In the Setup Printer widow, consider unchecking option Set Printer as Default, unless this will be your primary printer.

With the Print Test Page option selected, click the Continue button to complete the setup, and to automatically print a test page to confirm success.

The Xerox 7500 is located in the storage area at the back of the room. Retrieve your print to verify printer set up is complete.

You can change the Default Printer setting in System Preferences / Printers at any time.