Is it ok to make some payments to the ccd company while negotiating consolidation or settlement?

No. It's not right. If you pay something to the credit card company while negotiating for a lower payoff amount, then what does that mean? It basically implies that you can afford to pay off debts. And, if creditors get a clue that you can afford to pay off debts, then they may not agree to reduce your interest rates or your payoff amount.

Nick is right. Do not make any payments until you complete the negotiation and get it in writing. Both of you sign the agreement, especially in case of a settlement, and then make a lump sum payment on in installments as per your agreement.

Don't do that. Creditors can think that you are misleading then by showing a false financial hardship.