With this feature you will be able to choose the veggies that go in each of your upcoming CSA shares. 
On the Friday prior to picking up your CSA share, you will receive an email with a list of all the veggies currently available. You will then simply select the veggies you would like from that list, based on a set number of how many you are allowed to choose, submit the form, and that is what you will receive in your upcoming share.