SIM League Baseball starting pitchers

it would be great if we could change our starting pitchers before a game. for instance—in a playoff series, if i have Joe Blow scheduled to start Game 3 i can’t change my mind based on the result of Game 2. this makes no sense. if it’s 1-1, i might want to start Blow in Game 3 if i lose but go with someone else in Game 3 if i’m up 2-1. i just don’t get why we have to pick a starter two games ahead of time.