Quash Petition in High Court for 5 FIR's after settlement

My sister had to undergo desertion and cruelty in her marriage. The boy was an NRI and never came back to India once he went back to other country, after marriage organised in India. Both my sister and her husband have divorced each other in respective countries. My sister had also filed a case of 498A and DV against her in-laws. Her in-laws in return filed 5 FIR's on her and her family members. Chargesheet of the in-laws was filed 3 years back in the 498A matter. No relief came to my sister even after prolonged litigation, hence the matter got settled out of court through an MOU. Now both parties have to Quash their cases basis the MOU. Can we file the Quash petition in High Court (basis the MOU) for 5 FIR's filed on us by my sister's in-laws through one single petition or each FIR needs to mentioned in separate petition? In 2 of the FIR's chargesheet got filed against some of us and in 3 of the FIR's no chargesheet got filed against us. Should we mention these 3 in the petition