Tennis arrangement problem

Suppose 64 people are divided into the upper half and the lower half. A seed player decides through the first round of bye-draw, and each seed player chooses 16, and each player has 8 places. You need to draw lots to decide how many games you have pushed into the first half of the year, namely, Zone 32, 16, 16, Zone 8, Zone 8 and Zone 4. This is basically how tennis matches are ranked. . . . . .