Each organization that is incurring costs, earning revenue, or otherwise assuming a portion of responsibility for an event should submit its own Student Event Information Form.
The SEIF should indicate the organization's expected costs and revenues associated with that event and should also list the names of other co-sponsoring organizations in case the paperwork needs to be cross-referenced. The flyers attached to each SEIF should also list all of the co-sponsoring organizations.
(Note: if your organization is paying a portion of a bill or invoice requesting partial reimbursement for an expense, see "What if the dollar amount on a voucher does not match the sum total of the receipts?")