A board of pairs (2 feet)

Each athlete wears two transponders, one on each foot. A double hook holds the pair: MAPPING shows it as two half-cells.

1. Switch the board to pairs

   In admin mode, Boards tab: 2 per hook (pairs) for the whole board, or 2 transponders (pair) for the chosen hook (or the selection: Ctrl+click, or the Multiple selection (or Ctrl+click) box with a finger).

2. Fill

   Type “1-40” then Fill: twenty double hooks receive 1 + 2, 3 + 4… If, in FINISH, the two transponders of a pair share the same usual code (“P1”), type “P1-P20”: each code fills both half-cells at once.

3. Hand out

   Each half-cell is out or available on its own: an athlete who took only one of the two shows up at once. A double tap returns the pair; a tap on a half-cell returns only that one.

4. Give a pair

   Races, Choose on the board: tapping a double hook gives the first transponder to the athlete's no. 1 and the second to no. 2.