2.5.3 is your verification schedule, I use this for verification activities - Verify the metal detector is working every 30 minutes . Verify chemical concentration every morning via titration.
Internal audits go on 4.5.2 (Validation schedule)
To make it easier, I combine the 2.5.3 form with 2.5.1 (methods and responsibilities) and 2.5.4 (Verification of monitoring activities) . Basically it's a chart with each monitoring and verification activity, frequency, and responsibility.
So maybe the QA Manager checks the visitor log once a week, but they only conduct a food defense audit annually. The check goes on verification of monitoring, the audit goes on validation.
It can get very "fuzzy" as SQF does not dictate which activity is which. I attached copies of both if it will help - but don't be surprised if you get some different answers.