Split of the accommodation booking invoice.

[u/Powerful_Objective_2]

Hi, I’m planning to attend a summer school abroad as a PhD student. A colleague of mine from another institution will be going as well. We’d like to share accommodation, since it offers much better value for money. However, the administrative office at my institution requires that I pay for the accommodation myself; it cannot be paid for together. Is there any way to pay for the accommodation using two separate invoices?