girls 3 on 3

[just another ref]

Recently at a local high school a couple of girls championship teams from the late 50's were recognized. The players were introduced individually and were separated by positions, guards were introduced first, then forwards. In the halfcourt game, were the girls limited to one position or the other, or could they play both positions in the same game? I see this, especially in small schools with not many players, as a big deal. This could provide a coaching chess game in the final minute or two to pull the star player from one end, call timeout, and put her back in on the other end. Was this legal, and if so, was it ever done? The first girls games I remember had 6 players, but 2 on each end, and 2 rovers. I'm told this was only used for a very few years. Anybody here old enough or historically up-to-date enough to answer these questions?