Appeal in 138 negotiable

One of my clients was a accused in 138 case where he had given 10 cheques each of Rs 100000,

The complainant had filed 10 complaints in trail court and all were in the same Magistrate's court

Now he recently got convicted by the order of trial court in all the 10 cases.

Now if we want to appeal in District court then do we have to file 10 appeals or we can combine all in one, if yes then under what section??

Thanks in advance