Proof of claim by operational creditors initiates verification and classification for payment in voluntary liquidation proceedings. Form B sets out the procedural mechanism for operational creditors (excluding workmen and employees) to submit a proof of claim in voluntary liquidation, requiring creditor particulars, nature and amount of the claim, supporting particulars and annexures, and furnishing material for the liquidator to verify, admit and classify the claim for possible distribution from the liquidated estate under the applicable insolvency regulations.