It depends on the available talent. Ours is a large classification high school. Last year of the three starting pitchers only one could hit. He played center when he didn't pitch. Of the two primary relievers one came from a position and the other only pitched. The reliever who came from a position had to get in his warmups between innings, then come from the position if needed.
This coming season with two starters graduated, and the two relievers moving up to start along with two new primary relievers coming up from JV, only one of the starting pitchers will hit. Right now it's unclear if he'll play short or center when he doesn't pitch. The coach told him this week he may want an every day shortstop.