If you have never been to an NCAA game, 1st round tickets usually comes in groups of 3. There will be 2 games on friday afternoon. Then you are kicked out of the arena. At about 6 or 7 you have 2 more games. Followed byt the 3rd set of 2 games on Sunday. The participating schools usually each have a section of seats. Truthfully though I have always been amazed how many seats were open when their team wasn’t playing. Perhaps if you get your seats through the university, the ticket arrangement is different.