players/bench personnel during timeout

[boiseball]

I know that intermission means both half-time and at the quarter breaks and that all players become bench personnel during those intermissions such that techs become indirects to the coach as well

I saw a case play, 4.34.1, that talks about how during a time out the former players on the court are considered players and not bench personnel; not sure that works in reality; I am not always sure what 10 players were on the court going into a time out; additionally, there are often lots of substitutions during the timeout; subs usually become players when they walk onto the floor as beckoned; so how does it work when some kid has been in and then is standing in the huddle and turns around and tells me I am doing a terrible job; what should be my thought process for deciding whether he is bench personnel or not? how do I know if he is currently still in the game? any thoughts?