Physics and collisions in multiplayer game

Hi! I would like to make a multiplayer game that includes the floor is lava and at the end I want to let someone to stand on a button to unlock a new area for someone else to explore. However, I cannot use the player in the CoBlocks like the camera in single player games. Is there a solution to that?

Since I cannot let a player stand on the button (and collide), I tried this with a ball that has physics, so that the player could move it on the button on a slight sloped block. However, this ball is not moving. I checked everything, but it seems like physics is not working in multiplayer as well. Is there something I am missing or what I could do differently, or is it simply not incorporated yet?

If you bring out the collision block, “When my character collides with [object]”, and select the button, after plugging in your door code, it should work. If it does not work, please send a link to your project, and I can see whet will work.