Release deed via POA

Dear Sir We had an ancestral property to be divided among 4 siblings ( Among which which 1 brother expired during the course so his part was divided between his 2 sons and wife), on which via ratio deal with a local builder an apartment was constructed. I kept a flat in the same apartment as my share and the other 3 siblings were paid by the builder via DD's (mentioned in builders agreemen). But due to some mistake by builders lawer the flat still remain in name of all the siblings. To get register the same in my name i need to get Release Deed signed. Problem is to get the release deed register all the members are not able to gather at the same time and place (one of the son of my expired brother is blind). Can Release deed (Haq Tyaag) be executed via POA? If yes than me and my sister resides in Indore, M.P. while 1 brother and wife and one son (blind) expired brother resides in Ahemdabad(Gujrat) and and other son in Mumbai, Mah. I have already taken the pDear Sir We had an ancestral property to be divided among 4 siblings ( Among which which 1 brother expired during the course so his part was divided between his 2 sons and wife), on which via ratio deal with a local builder an apartment was constructed. I kept a flat in the same apartment as my share and the other 3 siblings were paid by the builder via DD's (mentioned in builders agreemen). But due to some mistake by builders lawer the flat still remain in name of all the siblings. To get register the same in my name i need to get Release Deed signed. Problem is to get the release deed register all the members are not able to gather at the same time and place (one of the son of my expired brother is blind). Can Release deed (Haq Tyaag) be executed via POA? If yes than me and my sister resides in Indore, M.P. while 1 brother and wife and one son (blind) expired brother resides in Ahemdabad(Gujrat) and and other son in Mumbai, Mah. Also note that I have already taken Poa in my favour from my brother(guj) and sister(indore). Poa from the wife of my expired brother and their sons are pending as they are not in my blood relation, what needs to b done in the same. Sir please help me out in the above situation. Regards Mahesh Mukati