SCOM Remote Maintenance Mode Scheduler is a GUI based tool that lets administrators easily schedule maintenance mode for a server or group of servers inside System Center Operations Manager 2012
Download for 2012: SCOMRemoteScheduler2.0_R2.zip
New Features in version 2.0 include
Ability to schedule a daily maintenance mode.
New Show Scheduled Tasks Dialog.
Added feature to see all details for scheduled jobs.
Added feature to delete scheduled jobs
Fixed Minor bugs
Here is what the new Show Scheduled Tasks Dialog looks like