How do I pause a reward to use it on a future order?

In the Rewards section of your Chopt account, select the toggle to deselect your reward. You will know your credit is ready to be applied to your order when the toggle is teal and to the right. It is paused when the the toggle is gray and on the left.

In the example below, the Free Chips reward is unpaused, and the House Account Credit is paused.