Answer:
policy
Explanation:
policy can be defined simply as a plan or as a course of action, as of a government, political party, or business, intended to influence and determine decisions, actions, and other matters.
It is put in place to regulate transactions between parties involved.
In most occassions, policies help individuals keep their terms of agreement.
A policy is different from a law in the sense that a law restricts everywhere, a policy restricts only certain places.
Susan mandated that "all customer phone calls and e-mails must be returned within 24 hours, is a policy put in place to enhance customer satisfaction and fulfilment.