Cheque Requisition's (ChequeReq's) are the main form of reimbursement for general EUS expenses. Basically, you buy something for your group (it needs to be an approved purchase), and the EUS will pay you back. You can pay in cash, credit, or debit- it doesn't matter, as long as you get a receipt/proof of purchase. Generally speaking, credit or debit is recommended on the off-chance you lose the receipt; there's still a record of the transaction on your bank account.