Power of attorney for a partner for complaint

your question is not clear to me plz write the matter morefully.Complaint dont by a 'single prtner while notice was signed by anather partner" plz explain the sentence 

hello sir

sorry for my typing mistakes

In this case the complaint was put before the court by a single partner of registered partnership firm and for the same no power of attorney was given by another partner or firm.

so my question is " Does a single partner can put a complaint under "negotiable instrument act" without holding power of attorney?

the check was issued to the firm by the third person

Okey say me who,s favour cheque was issued .

There is no irregularity in the said complaint. As long as the cheque was issued in the name of the partnership firm, a single partner can prefer the said complaint

The check was issued in the favour of partnership firm's name

Thnak you Mr. Chatterjee

The cheque was issued in the name of the Partnership firm in a compromise settlement, one of the Partners delegated his powers to P O A, who is neither an emplyee nor the payee or the holder in due course, he has no knowledge about the details, still can he pepose under oth behalf of the partner of the firm?????