You want to open an hour earlier on a holiday, or drop a SKU the brand book loves. That is an exception. Treat it like one.
The rule and the ask
Which policy line. Which store number. Which dates. What you will do if the answer is no.
Then: approve this exception, or say no by Friday so I can staff the published hours.
Do not send the workshop
Your assistant will write a case study. Delete it. A cold reader at head office compares your store to a dozen others. They need the comparable facts — last year's numbers if you have them, labeled as yours or as inferred.
One exception per letter
A pile of asks is how regional says "let's hop on a call" and the holiday arrives first. You can send another briefing next week.
If they have an account, you may already be contacts. If they do not, write anyway. The reply is the record you wanted.