By pushing a LEVER at the end
The Big Bang Theory Season 12, Episode 17
Give me a fulcrum and a LEVER
and I can move the Earth.
The Big Bang Theory Season 1, Episode 2
(CROSSBOW LEVER DRAGGING)
Game of Thrones Season 4, Episode 10
You use this LEVER to draw the string.
Game of Thrones Season 3, Episode 2
If you'll kindly pull that LEVER.
Game of Thrones Season 7, Episode 2