When placing a hold, one can check the Non-Priority box to make it so the hold will not block renewals for other patrons. (reserves.non_priority=1) Once a hold is placed, one can click the arrow to Toggle Lowest Priority to make the hold stay at the bottom of the priority list. (reserves.lowestpriority=1) These two features work so nicely together, I'd like to see a system preference that gives the option for checking the Non-Priority box at hold creation to automatically also set that hold to lowest priority.