A tip for training, do 1 of these 2 things:
1. Use three or six players (for 2 position training) and have them listed as starter/backup/reserve for the position you're training. That likely gets you 48 minutes for that game for that player for that position.
or
2. Game 1 - Player A starts, Player B backsup, Game 2 - Player B starts, Player C backsup, Game 3 - Player C starts, Player A backsup. This will get you close to 48 minutes a game for your players.
But since you're in division V and there will be a lot of blow outs, you should use training system 1.