here is what I did:
Players.PlayerAdded:Connect(function(plr)
plr:WaitForChild("PlayerGui"):WaitForChild("notif"):WaitForChild("question"):TweenPosition(UDim2.new(0.25, 0,0.25, 0),"In","Linear",1)
end)
However, it doesn't work. :(
I tried to do find first child and it also doesn't work.

1 comment
If your game is filtering enabled it will not work, you'll have to use remote functions instead w/ a local script.