Yeah, you just set them aside, they don't do anything else. Here's an example:
Round 1 - attack - attack pool is 20, result is 8 successes and 3 fatigue.
Round 2 - attack - attack pool is now 17, result is 6 successes and 2 fatigue.
Round 3 - attack - attack pool is now 15, get 5 successes and...