Your schedule dictates how many pulse rounds you have in a cycle. Once the rounds of your schedule is created, questions from the question bank are evenly and intelligently assigned to each round to cover as many key-metrics and drivers in the shortest time frame. However, you can view/add/remove questions from each round and configure this assignment to your liking.
For example, you can:
Remove questions from a round
Add questions a round from the question bank
Select some rounds to have more questions than others
All changed that you make will be saved for all future instances of that round (the following cycles).