Ok here it is I just phoned her.
"The experianced player has to stay at the back to enable him or her to coach", (Being politically correct with the him or her business).
"Only one player is to be experianced on the team, Captain or not".
The reasons are clear that a experianced player working from the front of a game would make it unfair on teams learning the ropes as they say, because his or her skills could easily clear a field given the right position.
Does this make sense now?
Glad to help hopefully I have!