Every rule must have a person (or more) responsible for its content - The rule owner. Readers can see this person on the "Acknowledgement" section.
When editing a rule, choose who is the rule owner on the "Acknowledgements" field. It is OK to have more than one person there.
Figure: This is where you add or remove "Acknowledgements"
Figure: You can add a new person in SharePoint, if the owner is not on the list yet