Click the Finder icon on the bottom bar
FinderClick Applications and then scroll down, find PDF Printer and open it
You can tell that it is running because the small icon below will show up at the top of your screen when PDF Printer is running
Click the apple icon at the top left of your screen and select System Preferences
Select Printers & Scanners
Click the plus sign at the bottom left corner
Search for "PDF Printer", select the correct printer with your correct name when it populates, and click "Add" at the bottom right corner
The printer should now show up as an option in your list of printers on the left-hand side, and show as "Idle" with a green do
Press the back arrow at the top left corner
Select "Users & Groups"
Select "Login Items" and then the plus sign
Find "PDF Printer" in your "Applications folder" and click Add at the bottom right corner
This should add PDF Printer to your list of applications that will open automatically when you log into your computer. If the program is not added here, it will not run when you first log in and you will have to open the PDF Printer app to run it when you would like to use it.