I got the following critical diagnostic:

"Use of the e-file PIN requires the Paid Preparer to have a PIN. The Paid Preparer PIN must be five numbers and not all zeros. To enter the Paid Preparer PIN please go to Settings -> Options -> Preparers tab and verify the Preparer's PIN OR in Screen 4, e-File PIN Main Form -> ERO's PIN [O]. (ref.#6338)"

How do I fix this?