Exact # of leagues means that you need exactly 11 leagues. Having more or less than 11 leagues will not meet the requirements. Also your reserves are not included in this only your substitute bench. So for the total 18 players (11 starters and 7 substitutes) you need exactly 11 leagues which means that 7 of the leagues you use will have 2 players (or you could have 1 league with 8 players or any other combination so that there are exactly 11 leagues in your squad and 7 substitutres).