Have a look at my team
(38913)Prior to this season I had 3 trainees being Williams, Palmeri & Ryder who up until this season I trained in single position training.
In the 5 or so seasons prior to this season, most weeks all 3 trainees would get 48 minutes.
To do this I play 7 players per game.
Id list the trainee either at Centre or PG and have them listed as Starting, backup and reserve for that position.
The 2 players who werent starting were listed as backups for 2 of the other positions each.
My trainees are SFs so I had them defensively switching with the SF position, where I would either play a guard or a tall.
As long as the trainee had at least inept stamina and the team didnt blow away teams by too big of margins, each player usually got 48 minutes in the game that they played.
Twice I won 2nd Division Championships whilst single position training my 3 trainees.
This season Ive been able to play them as SFs and PFs and dual position train them and Ive had a fairly successful season so far in Div one