Allowed to Edit Expiration Date and Time Permission
Allowed to Edit Expiration Date and Time is an app permission that gives managers and users the ability to adjust the number of days and the time the menu item will expire on the label. See A Closer Look at the Print Preview Page App Notification Bar
When this permission is turned on, the EDIT EXPIRATION (clock icon button) will appear on the print preview page of a menu item within the App Notification Bar.
User type permissions can be changed by Portal Administrators under the Users tab in the portal. See How to Update Permissions.