1. Go in Calendar 2. Make sure the Calendar is "Gatherings" (the calendars are shown below Calendar) 3. Click Add New Event 4. Fill out everything 5. Open your event on the calendar 6. Click on Request Reminder 7. Copy the address 8. Paste the link in your gathering thread, and tell others to subscribe to your deadline. 9. Subscribed people will receive reminder about your gathering so they don't forget.