Calendar Overlays

I’m curious if there’s a way there could be an overlay function on the calendar. For instance, it would be nice to have a checkbox or something where we could either blend the calendars, or have them up one at a time. For example, my job has a lot of events and programs booked, and there are revolving communications plans and material deadlines. It would be nice to be able to have the option to have the event dates separate from the deadlines when working, and then have an overlay that would line them both up so we can see the process in full. In short, if an event is on a Friday and I need to prep materials from Monday-Thursday, it would be nice to have those filtered separately so I can see it all in action with each other.