BIZHUB 2-sided printing for Macs
Some apps will already have Duplex (or Double-sided) as an option in the print window (ex: Preview) If not, (ex: Acrobat) these instructions will help you
Open the print window for your document, then choose “Printer…” at the bottom of the window
In the window that appears, change “Double-sided” to “On”, then “Print” to close the window.
Choose your other print options and then “Print” to send the document to the printer