How to design the next round of table tennis seed team?

72 or 72 people (teams) take part in the competition, with a maximum of 16 seed players, distributed in each116 area. 32 or 32 people have at most 8 seeds, distributed in each 1/8 area, and at most 4 seeds above 16 or 16, distributed in each 1/4 area. If there are less than 16 people, there are at most two seeded players, distributed in the upper and lower areas (1/2 area). Two seeded players are fixed at the top of the upper half and the bottom of the lower half. For the No.4 seed, the No.3 and No.4 seeds will draw lots to decide who is in the other two positions in the upper half and the lower half (1/4). In a word, except that the No.1 and No.2 seed players are fixed, other seed players should draw lots to decide who is in different areas of 1/4, 1/8,116.