How to group if the number of participants is odd?

1. When there is obvious evidence of high and low level, we should consider letting the higher level players take a bye. For example, 24 players and 8 seeds directly entered the second round, and 8 people who advanced from the first round 16 competed for the top 8 seats in the third round; If there is no basis, draw lots for bye-bye players. 2. Adopt flexible circulation system. For example, 35 participants will compete in the 12 group. ...