If you would like to add more items during the billing cycle, you can do it: in that case we will correct your monthly rental pro rata temporis from the pick-up date of the item on. If you add an item or box in the middle of the billing month we will calculate the effective rental days (including the pick-up date) and add the amount to the billing cycle of the following month. Also in this case the minimum storage of every single newly added item or box to the already stored ones is of three months from the date of pick-up on. You can require one or more of your items to be delivered back to you before the end of the obligatory three months but you will be billed the full amount of rental for three months.