In access terms it would be called a sub-report (as in a report in a report).
A club has members. These members are categorized in teams and other people.
Each team has players, at least one coach, a team manager, a physiotherapist and other people related to that team (That was my first problem and was solved in that other thread).
But a club has also members that do the organization of that club. Like a president, a vice-president, a referee coordinator, referees, a technical commission and other related persons to that club.
They all have no connections to any teams. But these are the members that 'stay-over' for that season.
The season is the connection they all have in common.
I hope that this gives you more info in my problem and we can solve it together.