All the players are official whether they're on the field or not.
Referees
There are 22 players on the field if you count both sides. Basically making 11 players on the field for one side.
six players are allowed
11 on-field players
The official rule for men's field lacrosse calls for 10 players on each team - 3 Attackman, 3 Middies, 3 Defensemen and 1 Goalie - on the field or 20 total players.
6 players
18 players on the field, plus 4 interchange players. 22 total.
11 players
well 22 players is on the field so each team has 11 players
Usually, there are atleast 11 players on the field, including the goalie.
11 for each team so 22.
The offense and the defense can each have 11 players on the field. If they have 12 ormore players on the field when the ball is snapped they are penalized.