So far you have been posing both legs at the same time. It is possible to
pose one leg or arm first, then copy and paste it to the other side.3 In the Front viewport, select one calf. Scale the calf so the ankle joint
falls just above the bottom of the pant leg.
4 Scale the foot so its bottom reaches the bottom of the mesh foot.
Aligning the Biped to the Model | 903