operational research
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Just stagger back and forth slightly by 4 (dancing together is recommended)
The first three and the last five are inserted into the empty station (there are many solo dances in the dance, which are suitable for this)
Of course, the location has a lot to do with the dance you arranged. The above is just the basic position.
In fact, if you have a good sense of stage and proficiency and a high degree of harmony with music, it is also very good to try one dance for multiple formations. It is also good to add some small moves in the process of changing formations. Moreover, when dealing with music variation, we can also use the method of changing the formation to minimize the blank time.