To add a printer

1. In order to determine the proper printer settings the best practice is to first configure the printer on a single macOS host system. Add the printer as instructed in the macOS documentation and verify that you can print to it. Once you have set up the printer open the printer properties and make a note of the following settings: Name, Location, Kind and URL. The following screen shots show where to find these settings:

   

   Click the Options & Supplies button to determine the URL:

   

   This is all of the information you will need in order to configure the printer for all of your macOS systems using Group Policy.

2. In Group Policy Management Editor, open the Printing policy (Computer Configuration | Policies| Mac OS X Settings | Workgroup Manager Settings) and select the Printers tab.
3. Select the Always management mode.
4. Click Add to add a new printer to the policy. The Add printer dialog appears. Enter the Name, Location, Model and Printer URL, then click OK. The best way to determine the printer URL is to configure a printer on a macOS client and enter the URL specified in the Options and Supplies dialog. See step 1.

   

   You can also add SMB printers by browsing for the printer in Active Directory.

5. If you want the selected printer to be the default printer click Make Default.
6. If you want to require the user to enter an administrator password before printing to the selected printer, click the Require an administrator password option.
7. Click OK to save settings and close the Printing dialog.