When setting up a new event or meeting, use an email group address to quickly invite all members of a group.
This is a handy tip when setting up an new event and have to invite all the staff to the event. it will help you save time having to enter each mail address separately. A example would me firstname.lastname@example.org
You can add the all members of an email group:
Type the group email address in Add guest
All members of the specific group account will be added to the attendees list
If you wish, you can then edit them as normal