It would be helpful to have an end date (either a drop down/calendar with an actual date or options like "1 month," etc.  - and even a "forever" if someone truly needs the group to continue rebuilding indefinitely) for rebuilding the groups automatically. During event season, we would need groups rebuilt somewhat frequently, but after the events have occurred, we don't need those groups to continue rebuilding. Unfortunately, the admins rarely go back in and edit all the groups to stop the rebuilding. (I know because I just cleaned up hundreds of rebuilds going back to 2007!)  If there was a way to set an end date, we could do that at the time of configuration. Having the end date option available under the current rebuilding options on the group page would be ideal. And surely this would improve Blackbaud's server load, as well.