You have a reading deficit I see.
An employee can act within the scope of his employment. A store clerk cannot create or modify store policies. That is why they get fired for doing so. Just because you comply with every directive you get from a pissant clerk does not make it a requirement.
the deficit is yours I responded to the wording of the original post. I was a manager for over 20 years and still own my own business, but like to get advise from “experts.” like yourself.