Door entrance lights change

Hello together I would have a question: how do I change the entry lights on the door? I recently got a star projector that is installed on front and behind doors instead of the normal entry lights. However, if you look at it more closely, there are no screws or anything else to recognize to build the lamps out. Has anyone ever made that change the door entry lights? And could anyone possibly explain to me how this works? would be great. I’ve also looked if you wrote a similar post before, unfortunately without success the only post I found on the topic was from @rd350L4M who asked if someone knows an entry lighting. Sincerely.