Where does the heavier person need to sit on a seesaw?

The heavier person needs to sit closer to the pivot point of the seesaw in order to balance the seesaw with a lighter person on the other side. This is because the torque produced by the heavier person sitting farther away from the pivot point needs to be counteracted by the torque produced by the lighter person sitting farther away. By adjusting their positions relative to the pivot point, the seesaw can achieve equilibrium and remain level.