Packing Individual Units

hi, I have tried searching for this specific question but cant find an answer.

im packing up my items to send into the warehouse, i have 13 boxes to send in all with the same items in them. when im filling in the packing information i choose ‘multiple boxes will be needed’ then it only lets me enter info (dimensions/weights) for a max of 10 boxes. what do i do about the other 3 boxes?

thanks in advance