When you make this intro yours, if the amount of contestants there are is small, choose a song with a drop that lasts shorter. if it has a lot of contestants, maybe use music that might last until the intro ends that you like, and change the amount of contestants here are to the amount there are in your show, and change them to the ones in your show! and remove the thumbnail when the intro ending square shows up.
You don't have to credit, really it's O.K if you don't!