Custom THold Alert Exceptions?

[bsc]

I am wondering if you can define certain windows for thold not to send alerts if they happen. We put our blade center into a restricted state every night for a couple hours to perform backups on the iSeries side and I don't want to alert about the servers that are running on the blades going down and coming back every night between those hours.

I only see the weekend exception check box, but wouldn't it be a bit better if we could define our own schedule for exceptions?

Is there any plugin that can do this? I am guessing the code would not be that hard, but I don't want to duplicate existing code if I don't have to.

Thank you!