Epson B 510DN - Manual (Page 55)

3. Select the printer you are using as the Printer setting, and then make suitable settings.
Note:
Depending on your application, you may not be able to select some of the items in this dialog. If so,
click Page Setup on the File menu of your application, and then make suitable settings.
B-310N/B-510DN User’s Guide
Basic Printing 55