At present it is not possible to have an order sent to you at a specific date or to postpone the delivery. We would therefore recommend that you check the availability of a product and delivery times to ensure that you are likely to be available for delivery of the item.
In order to help our customers we do allow items to be despatched to a different address. The most popular option is to have items despatched to your workplace, so that one of your colleagues could sign for it, avoiding the item not being delivered and then having to arrange re-delivery. Also, don't forget to inform goods in/reception that you are expecting a delivery, so that they don't accidentally refuse the delivery.
We have also found that despite the fact that we have a very high success rate in terms of delivery of our products that the small number of problems that we do have tends to be to residential addresses rather than business addresses. We would therefore always recommend where possible that customers have items delivered to their work address to ensure delivery.
If you still need help then please raise a support ticket.