To Add: Log in, then go to the product page of the item you'd like to add.
You'll see an option to '+ Add to my Auto Delivery', select it and it will add to your Auto Delivery.
If you have more than one Auto Delivery group, the list will drop down. Simply click the group you'd like to add the item to.
To Remove: Visit your order management page by clicking here .
Select 'Manage Order'. This will show a detailed view of the items in your Auto Delivery group. You will see a 'trash bin' icon on the right-hand side of the item - click it to remove the item. A pop-up window will ask if you're wanting to permanently delete the item - click 'Delete item' to confirm this.