Starters used as relievers

It's been awhile since I've done this, so I need a refresher. How do you do settings if you want a guy with an S rating to relieve regularly? And does that change if you want to spot start that pitcher every 8 games? I've got Babe Adams but a 4 man rotation. Is it possible to have him start every 8th game and still relieve regularly?

What I do is list him like a reliever in the pitcher settings and then when I want him to start put him in that days' rotation manually. Don't list him any other times or it effects his relieving. Just that day and fill it in that day.