Monitoring Schedule

I wish to avoid alerts during multiple times of the day and night because of multiple daily maintenance windows on certain resources. There is the Alert Threshold Wizard that enables me to set the many time ranges we wish alerting enabled. But this is per Datapoint. I have multiple Datapoints within all my impacted Datasources that needs the same schedule. Is there a way to easily replicate the schedule without having to enter the multiple time ranges on each Datapoint? If we need to change the schedule, then I would have to modify each Datapoint individually on all affected Datasources to keep them in synch. I can use SDT to avoid notifications, but that throws an Alert regardless. Else, it would be nice to have a Monitoring schedule per Datasource and host.

Thanks- John