It's the same about the difficulty (not so difficult if you follow instructions) to get 48 minutes in one game for a player.
Can you please post these instructions that works 100% time? I didn't find them. Because of that I'm making this suggestion. BB may or may not accept this.
Official guide contains only basic information. More detailed guide is guide from RIP, but he clearly state that
"There will certainly be a lot of factual information in it but there will also be a lot of opinion based segments that are based on my own, and others, experience in this game".
Maybe he was not familiar with the fact that GE wants to make training on single position with 3 player harder than usual. He can correct that if he wants. That is on him.
The fact is that I don't like this behavior from GE and I suggest that BB change it.
You need to separate it into two separate requests. Both are important, and I support them both.
1) A new user will expect that when setting a single player to play both as Starter, Backup and Reserve on a single position, and will be available to play will actually ... be on court.
Due to that, at least an explanation what is true and what is not regarding this basic expectation needs to be displayed at the information page.
2) I do think that using this settings is enough for making that player playing 48 minutes (unless injured, etc.).