If a user sets up a meeting and sends out the request for acceptance some users can't figure out that THEY ARE SUPPOSED TO CHOOSE one of the options. i.e. "Accept", "Decline", "Suggest new time". But what if they don't choose anything? One of my users says that people just show up to meetings because, supposedly, the meeting is added to their calendar even if they don't choose a response. Given, it's probably showing as "tentative" in the meeting chair's Sheduler. But still, how do I force a reply? Or, failing that, how do I have the user send out a request for some sort of response?