1 The meaning of a single round-robin, for example, there are four teams, then one of them and the other three teams must play and only play one game, there are 3 2 1 = 6 games.

2 The right to qualify simply means winning from this group. Qualify from this group and advance to the next round! ! !

Seizing the right to qualify is to compete for the place in the qualifying group

Finally, why is there any benefit to seizing the right to qualify? Well, qualifying means winning in the group and then entering the next round! ! !