How can I attach multiple tools onto a player's body?

In my game, you can equip multiple tools and select them from your hotbar in order to pull them out. I can attach them fine, but I can't find a way to animate them while on the player's body. I have a part in the tool that's for gripping the tool onto the player, and all the parts are welded to it. However, when I try to add a motor6D to the part and animate with it, it says that there are multiple motor6Ds on the part I'm trying to attach it to in the dummy's body, and thus I can't create any animations with it. Is there some other method I could use to attach it to the player? Also, I've already tried attaching the part of the dummy's body to the grip part as well, but that won't work because there'll need to be multiple tools connected to that part at once.