Claims by creditors in a class must be submitted electronically with proof and may designate an authorised representative from provided choices. Regulation 8A requires a creditor in a class to submit its claim with proof electronically in Form CA to the interim resolution professional; proof may be by information utility records or other documents such as agreements for sale, letters of allotment, receipts or other evidence of debt, and the creditor may indicate a choice of an insolvency professional to act as its authorised representative from the options published by the interim resolution professional.