Z To Sit

local m = game.Players.LocalPlayer:GetMouse()
m.KeyDown:connect(function(k)
if k:lower() == "z" then --You change this to whatever you want
local c = game.Players.LocalPlayer.Character
if c then
local h = c:findFirstChild("Humanoid")
if h then h.Sit = not h.Sit
end
end
end
end)