The match is played according to the current rules of beach volleyball. The referees are the tournament participants themselves. The basic rule is that in the groups the winning team whistles the next match, and in the playoffs the losers (if necessary, the organizer may assign whistling to another team, taking into account the course of the tournament).
In case of equal points in the group, the mutual match will decide. In the case of equal points for all teams, the score ratio will decide.