Thank you for using the Support Forum.
When you go to print & fax -> select the correct printer -> options and supplies -> drivers.
Here you can choose finisher
Select the "Office finisher LX" and under hole punch select "2 to 4 hole" ..
After this you can select the professional finisher.
If this does not fix the issue please consider contacting your support centre for further assistance.
Has anyone had any. issues with the macOS Catalina driver recognising the Professional Finisher on 7800 or similar?