If the “power o” scheme is part of your offense, then only slight adjustments need to be made to implement the power read. The “power o” involves getting a combination on a down defender front side while pulling the backside guard around for the frontside linebacker. 

The outside portion of the play is a basic sweep play. The remaining blockers take care of defenders outside the box attempting to reach them, but at the very minimum displacing them horizontally so huge running lanes open for the sweeper.