My Fathers 2nd wife Cruel Activities

we are 5 brothers in which 3 are married and they are living in seperate life but Working Under my father Factory which is running and maintained by our brothers only.My father wanted to go seperate.2 property are in my father name. how to seperate them what is the rule of seperation of property. we 5 brothers are from 1st mother after my mother demise my father wanted to marry i.e we have decided to marry my father.