If KT allows this (extra cost), simply create and launch another Campaign made up of all the additional photobook requestors. You may have to collect payment separately/directly from these customers as the photobook platform does not have a shopping cart and online payment module for Kensington.
Answers #
At this time we have only allocated one photobook per party and that is what the software will allow. Please write to us with your request and we will try our best to assist you.