When I send a calendar appointment using Outlook 10 to my boss and set the reminder to NONE, does the reminder stay at NONE on my boss's calendar or does it change to my boss's default reminder setting on her calendar? (she uses a default reminder of 15 minutes) Will her calendar appointment reminder her at 15 minutes til or NONE?
The reminder would show up as NONE on your boss's calendar. By default, Outlook appointment reminders take the value set by the creator of the invite, not the attendee's preferences.
Once the attendee accepts the invite, he/she can always double-click the invite and change the reminder time.
In case you think your boss won't pay attention to the reminder time, it's best you set it to a value other than NONE.
I did a round of testing with this one today actually, Outlook 2010 clients and Exchange 2010 SP1.
It seems that the reminder time set by the meeting organiser is inherited by the attendee unless the organiser set it to None. In that case the attendee's Outlook seems to see it almost as a null value and adds a reminder with the attendee's default reminder time (File > Options > Calendar > Default Reminders).
Of course the attendee can always override the reminder time, but if they don't, that's what seems to happen. I thought it was weird enough to post =)