Once you have created a new label under Manage Labels.
Whether you are approving, cancelling, or moving the order to a workflow, you can select a label to apply to the order. Applying a label makes it easy to search for orders and get reports on orders that have a label.
In the Make a Decision popup, click into the labels fields and choose from among the labels shown. Optionally, you can add one or more new labels—simply enter the name of the new label.