To make your own events visible in the CrewBrain calendar, it is possible to import calendars using a URL that is stored in CrewBrain (My Account > External Calendars). Since this URL can be found in different places depending on the calendar, the procedure for the most common calendar types is explained here.
The first synchronization can be triggered manually (download arrow to the right of the calendar name in the calendar view). External calendars are synchronized automatically, but not in real time. When an event is entered, it may take a few hours until it is also visible in CrewBrain.