In walkover, if you set the same player as starter, backup and reserve you get 36+5+2. So any time you use any starter in any backup spot you lose 5 mins of playing time. Using a starter in a reserve spot will net you the normal 2 mins. I have researched different assignements a lot, only one I have not researched is setting a starter into 2 backup spots aswell as one reserve which theoretically should give 48 minutes. 36+5+5+2. So if you are training 1 spot then you can not get full 48 training minutes in a WO.