For the pegging position Sidesaddle, the receiver lays on their side with their top leg bent and pulled up towards their chest. The receiver's knee pulled up allows for easier access and the side laying allows for relaxation as well.
The giver places one knee between the receiver's legs, with the other behind. This is a good choice for givers with shorter legs. Couples with a big height difference when the receiver is much taller than the giver) love this position. Eye contact between giver and receiver and cock access are both decent. You can easily transition to Sideways Missionary, with a little moving around of the receiver.