How to add a network printer on mac that requires authentication
Right-click on the toolbar in the gap between Windows and the Search bar, then choose Customise Toolbar….
Add the Advanced button to the toolbar and Done.
Choose the Advanced tab you just added.
Choose Type: Windows printer via spoolss.
For URL, enter smb:// followed by the address you were already entering.
You will need to manually set the driver. Choose a Driver… → Select Software….