Suggestion: For example, if there are 20 people, basically change the formation every 2 8-beats or 4 8-beats.
Formation example:
Formation 1: 4 columns, 5 people in each column.
Formation 2: 4 columns become 2 columns (such as columns 1 and 4 inserted into columns 2 and 3)
Formation 3: Return to 4 columns
Formation 4: 4 columns move forward
Formation 5: Return to 4 columns again
Formation 6: 5 lines, each line becomes a small circle
Formation 7: Restore to 4 columns again
Formation 8: Teams 1 and 2 exchange positions, 3 , 4 teams exchange positions and restore again
It can also be turned into a large circle. In short, it can be changed according to the music and needs (but pay attention to the movements in time)
Hula hoop: OK 5 People form a pinwheel shape and rotate clockwise and counterclockwise. (It is estimated that to complete this set of movements, at least 4-6 8s will be required. 2 8s to form a pinwheel shape + turn 2-4 8s)