"Select All" Field on Sign Up Menu
Add some kind of warning that the volunteer has selected the "Select All" item from the top of the Sign up menu. If a Volunteer accidentally selects that item in my system they can be assigned to many activities because all our volunteers make their own schedules..
Meghan Kaskoun commented
It would be great if this could be a customizable message, so if we don't want them to select all but only one date, that reminder could be there immediately.