Under the Drawbeads panel, when you select value you can calculate using the Calculate panel and automatically retrieve and input the values as actual numbers. If you select percentage, force is applied as a percent of the required necking force (100 percent  restraining condition).

The restrain force is the value of the force per unit length applied by the bead in the plane of the blank surface. The closure force is the force per unit length required in the perpendicular direction to keep the drawbead closed.