To configure where receipts will print and from which terminal, select Setup Config from the top bar of the home screen.
Then go to Hardware, then Printers and choose Client Printers.
Clicking on Clients will pop open a list of terminals and allow you to set up printers for them.
Add Printer will take you to the Add/Edit Printer menu where you can configure individual printer options.
Physical Printers opens the menu for enabling and disabling printers and printer checking.