If you are not raising funds or if needed for some other reason, you can manually add Booster Reward points to the pool. Simply click the "Adjust Booster Reward points" button.
If the Booster Rewards pool runs out, students will stop receiving their Booster Reward points at the end of each round. Once the Booster Rewards pool is refilled points will be distributed when the next round is processed, however points will not be distributed retroactively if the pool ran out.