Want to add all your students birthdays to a Google Calendar at once? Have a list of dates that you have meetings? CallAdd adds events to your calendar from a spreadsheet. Make a list of all the things you want to add at once. Set the start time in the format of mm/dd/yyyy hh:mm:ss and the end time in the same format (or leave blank to automatically set for one hour or one day). You will need your calendar ID to tell the script which calendar you are adding the events to. Go to the calendar settings and locate calendar ID. Copy the ID to enter when prompted. This Add-on was created or premium members of AliceKeeler. Join at http://alicekeeler.com/membership Check out more of her Add-ons at http://alicekeeler.com/codedbyalice