To get tickets you had to go to the website and pick the events and the maximum you were willing to pay for the tickets. You didn't get to select where exactly you could sit. Once you had picked all the events you wanted and the prices you then completed your submission and you entry was entered into the ticket lottery. It was then (supposedly) randomly selected who got what. You could end up "winning" all of the events and seats you applied for, or none of them at all, so if you tried to spread your selection over many events you could become unstick and find you have been given the lot and face a huge expense. Or end up with none of them.

BTW, we didn't get any of the tickets we applied for, so won't be seeing anything live at the Olympics next year.