Collision Group Script

game.Players.PlayerAdded:Connect(function(plr)
    wait(1)
    for _,part in pairs(plr.Character:GetDescendants()) do
        if part:IsA("BasePart") then
            game:GetService("PhysicsService"):SetPartCollisionGroup(part,"Players")
        end
    end
    plr.CharacterAdded:Connect(function(char)
        for _,part in pairs(char:GetDescendants()) do
            if part:IsA("BasePart") then
                game:GetService("PhysicsService"):SetPartCollisionGroup(part,"Players")
            end
        end
    end)
end)