(1) If the summons has been issued on complaint and on the day appointed for the appearance of the accused, or any day subsequent thereto to which the hearing may be adjourned, the complainant does not appear, the Magistrate shall notwithstanding anything hereinbefore contained, acquit the accused unless for some reason he thinks it proper to adjourn the hearing of the case to some other day:
Provided that where the complainant is represented by a pleader or by the officer conducting the prosecution or where the Magistrate is of opinion that the personal attendance of the complainant is not necessary, the Magistrate may dispense with his attendance and proceed with the case.
(2) The provisions of sub-section (1) shall, so far as may be, apply also to cases where the non-appearance of the complainant is due to his death.
Mr.Samir asked about how to stay the proceedings in crminal case instituted as private complaint- but the below sections say--
257. Withdrawal of complaint.
If a complainant, at any time before a final order is passed in any case under this Chapter, satisfies the Magistrate that there are sufficient grounds for permitting him to withdraw his complaint against the accused, or if there be more than one accused, against all or any of them, the Magistrate may permit him to withdraw the same, and shall thereupon acquit the accused against whom the complaint is so withdrawn.