You can set up a printer from the account section of the application.
Navigate to the menu by clicking on the menu icon:
From the menu, click on the "Account" section to view account preferences.
From the preferences section, toggle on the "Receipt Printer" setting.
To configure the printer settings, click on "Set Printer".
Add your Printer's IP address and select the brand. Click "Set" to save the printer configuration.
From the account page, click "Save" to update the account settings.
You should now be able to print. From any screen that you see the above print option, click "Print" to print from your configured printer.