Show user create category

Is it possible to display the username in the red circles, from the registered users who create an new event?

Thank you very much for your response

Ed 

I think, this is not possible, but perhaps you can do something with the categories

Perhaps you can show the author in an simplelist override. In the detail view there is shown the author of the event. with working in the common/views/tmpl/(responsive/)default.php this should be possible.