1. Click on the iCalendar icon to access the editing interface
2. Hover over the message area to bring up the blue configuration strip and click on iCalendar file config. The 2 date and time fields will be filled with the already configured information of your activity.  
3. In the popup, fill in the fields:
   1. Summary - Title of your iCalendar
   2. Location - Location where the activity will be held
   3. Description - Additional information about your event, such as a login link and other steps to follow.
4. Click on Save