my experience - player with 2-post training train around 70% of player with 1-post training. In this way if you have 6 young players then 2-post training is preferable.
Help how to train most effectively(3x48 minutes, 6x 48 minutes):
1-post training of press(OD) - for PG , but it works for all 1-post training (C - ID, SG- JR ... )
put 9 players in your "selected players", and put this players by this instruction:
"Foul Trouble" - let them play - this is major!!!
as PG - your train player only, in starter team and on bench too
as SG - two another players (one as SG starter, one as first SG bench position)
as SF - two another players (one as SF starter, one as first SF bench position)
as PF - two another players (one as PF starter, one as first PF bench position)
as C - two another players (one as C starter, one as first C bench position)
this means that you have all your 9 players in starter team or in first bench position. if injury nor fouls don´t occur then your train player play whole match ( coach change for train-player sometimes if this train-player hasn´t good stamina).
Then repeat this instructions in second league game and SC/cup game with another train-players, and you have 3 train-players prepared for full training on PG.
2-post training of one to one (DRI) - for PG and SG , but it works for all 2-post training (C/PF - ID or REB, winger - JS ... )
put 8 players in your "selected players", and put this players by this instruction:
"Foul Trouble" - let them play - this is major!!!
as PG - your train player only, in starter team and on bench too
as SG - your second train player only, in starter team and on bench too
as SF - two another players (one as SF starter, one as first SF bench position)
as PF - two another players (one as PF starter, one as first PF bench position)
as C - two another players (one as C starter, one as first C bench position)
this means that you have all your 8 players in starter team or in first bench position. if injury nor fouls don´t occur then your train-players play whole match ( coach change for train-player sometimes if this train-player hasn´t good stamina).
Then repeat this instructions in second league game and SC/cup game with another train-players, and you have 6 train-players prepared for full training on PG.
Sorry for my english.