The first time a pilot log in a tour, the program ask him "Do you want to be ranked this tour? (YES/NO/NOT SURE)". If the player answers "NO", he will not participate in the ranks for that tour, and he will not be shown in any part of the score pages nor affect the rank/scores of his squad. If the player answers "YES", the program ask him "For what country?". So, that pilot will accumulate points, kills, deaths, etc, along that tour only while flying for the choosen team. If the player answer "NOT SURE", the program keeps asking him the same question every time he logs in the arena until he decides YES or NO, but meanwhile, he is not ranked.
This way, the scores and ranks for the squads will be based only on the members that decided to participate in the ranks for the present tour.