ARM Security - Admin vs Power User vs Reviewer

Trying to configure security ARM security in 11.1.2.3.5 and seems like there aren't enough choices.  Looking for a role that allows someone to review recs, reassign recs, add recs, and close/lock periods.  The Administrator would work, but then they couldn't review.  Currently have the person set up as a Power User/Reviewer and the Power User/Reviewer combo role doesn't allow them to close/lock periods or review.

Would like to avoid having the Admin close/lock periods as it is a business user decision to lock a period and not a system admin decision.  Anyone have any ideas or would like to share how they have configured their processes and security?