Yes. In order to “play up” a player must be ranked in the Top 11 by the tryout evaluators (Top 9 for U11/U12)
U11-U14 players are only allowed to play up one age level. Meaning, a U12 aged player could play U13, but not U14 or above.
Players aged U15-U19 are not restricted by age levels, so can play up on any team for which they earn a Top 11 spot.