The minimum number of hours a registration can remain held before it is taken out of held state and no longer counts against capacity. For no limit, use 0 (default is 1).<br><strong>Note</strong>: registrations are removed from held state by cron, so the number of hours specified is the minimum amount of time a registration will be held for; it can be held for longer depending on when the next cron run is after the minimum amount of time has elapsed.