I realize I can change the slug of the Events Calendar from /Events to /Calendar but trying to figure out if its possible to change to /Parents/Calendar or some other URL that isn’t not at the top level.
That isn’t directly supported – it may be possible if you are confident working at code level, however, and you could definitely also add this as a feature request:
At this time though I don’t think there’s much else we can offer up for this one so I’ll go ahead and close this thread. Of course if there are any other problems please do feel free to create new threads as needed 🙂