Currently, when you set a new event on the calendar, or send out a message, the default is to send it to everyone in every unit on your team. Our team is broken up into several units because our job is to coordinate all animal responders county-wide. This includes organizations (the members of which I have put in under separate units) that we have minimal interaction with except during a disaster event. Our management unit consists of 11 people out of over 100. If we forget to unselect all, then select only our unit, all of those 100+ people get informed of something that they have no involvement with. Would it be possible to change the default on messages and calendars to no units? Then, if we forgot to pick the unit, at least we wouldn't be getting 100 WTF e-mails back from people.