Temporary Role Privilege Escalation
Enabling this feature will allow administrators to temporarily grant extra access to a user of the site for a specified period of time. For example, a contractor can be granted developer access to the site for 24 hours after which his or her status would be automatically revoked.
After enabling the feature navigate to Users and select the user that you would like to escalate it's role. Under Temporary Role Escalation select the role to escalate to and enter how many days it should remain that way.