B2C small credit note

Dear sir,
My friend is a registered dealer,
he have made taxable supplies to intra state unregistered persons, now he raised credit notes for that supplies.
please guide me where i have to provide credit note in GSTR 1.
In portal i have find credit notes for only B2C L, EXPORTS.
But i didnt find any option for b2c small invoices.

Please help me in this regard

Thank's