hey!! @javierrolj First you have to make your NEW buttton and then you have to duplicate all blueprint of amenities or surroundings, then you have to sustitute all the amenities buttons for your own button, then you´ve return to the designer and click on your button, go to the details and below in the events you need to add new event on clicked and that event you connect to your new BP.
I hope that i could explain good!