Hello Lars,

For now, only possible one by one event, in frontend, by enabling option "Add to calendar" (multiple options for this in Global Options of component, in General Settings tab).

You can see it in action here : demo.joomlic.com/2-serenianus-ex-duce?date=2017-07-15-20-00
(icone calendar at the top-right)

Later, it's planned to add this feature in main list too, which one will allow for ics file, to export multiple events in one click, of the list of events displayed (filtered or not using the frontend search filters).

Hope this helps ?

Best regards,
Cyril