Okay, just checking. I know on the NC2A-W side:
Section 3. Lineup
Art. 1.
Before the 10-minute mark is reached on the game clock that is counting down the time before the start of the game, each team shall supply the scorers with names and uniform numbers of squad members who may participate, and those of the five starting players.
It doesnt state that they have to be in the official scorers book, but the few times that I checked prior to the 10 minute mark, the information was in the book. Just my two cents.