I’m trying to make the players press a button to activate the collision or deactivate the collision but I can’t, how could I?
Maybe try a search on the developer.roblox.com site:
Detecting Collisions | Roblox Creator Documentation
Not exactly sure if this works, but can you set all the player’s body parts to cancollide off?
collision groups are perfect for your situation, it can be found under model. you can set one to not collide with itself and use physics service to set it