Hi @yesinter, when you go to Events menu, in that menu select settings, you find 4 tabs. The third, Formatting contains the option Events.
This is where the front end get its HTML formatting from for both event lists and individual event pages.
By including the placeholder #_EVENTIMAGE in the HTML for either of those (event list / individual event page), it will then show up on the front end.
You can include the size you want it to appear in as well by adding {100,100} at the end (this example generates a picture of 100×100 pixels). So combined you’d have to include #_EVENTIMAGE{100,100}
Depending on how/where you want it to appear, you’ll need to do some styling (CSS).