My Grandfather is having 3 sons and 5 daughters and he was having 20 acres of land from his father. In 1978 my grandfather, after some dispute with one son released a share of 5 acres for which my grandfather (Now he is dead and he did not write any will), and 2 sons signed it. None of the daughters signed on that release deed. Later the remaining 15 acres were shared among by other 2 sons.
My Mother and one more sister filed an Original Suit (O.S) in Bangalore (Year 2008 and still in hearing stage) for share in Ancestral Property. They filed a suit against only 2 brothers who are having 15 acres of land and also mentioned in O.S that the other brother got land through a release deed and he is not a part of the suit.
I need clarification below on points:
1. Can we change/Modify the suit by including the other brother who is having 5 acres of land into this suit?
2. Later the other 3 sister's also joined the case and what will be their claim in this case.
Also give me a detailed explanation on how can we include the other brother who is having 5 acres of land. I need you help for this particular question in details and different ways.