I'm working on an "Event Support Request" Process to track requests for us to support a physical event in our buildings. These sorts of requests do not have a "time elapsed" service agreement, but rather a specific date/time by which they must be completed (the time of the event, e.g. "March 15th, 7p.m."). I intend to add an "Event Time" attribute to Request. Is there a way to set escalations relative to this time (e.g. "X hours before")? This is intended to provide warning so we can verify tasks (e.g. "A/V setup" or "rent tables/chairs") have been completed by a particular time.