Suppose I submit a paper with a co-author to an expensive computer science conference, and we agree to split the expenses between us. How can it be done, from a bureaucratic perspective?
Suppose it is agreed that author A will fly to present the paper in the conference, while author B will remain at home. One way to split the fees is that author A pays his lodging and flight fees, while author B pays the registration fees. The problem is, most research funds do not let a person pay for another person - author B will not be able to get reimbursement for the registration of author A.
Another option is that author B will register to the conference and get reimbursement, and then ask the conference staff to rename the registration ticket to the name of author A. However, the conference staff might refuse, and additionally, the research fund might view this as cheating (IMHO it is not cheating - it is just a fair way to split the fees - but the fund might think otherwise).
Are there other options?