I just spoke with someone through the Help chat about this, and they asked that I suggest this. I work in admin for our agency, and have some days throughout the year that I block out as All Staff Holidays - Office Closures. The issue I'm having is that if I accidentally make a mistake in creating an event (for example, accidentally putting Christmas on the 26th instead of the 25th), I cannot make the change for the whole group all at once, or delete it all in one delete. Instead, when I did make a mistake the other day, I had to delete each event individually for our 30+ staff. It would be great to have an option to delete everything at the same time when I make a mistake such as that!