In a family dispute, four owners with equal share of a flat in Andheri are going for redevelopment The flat is inherited from grandfather.. Father, mother and daughter are willing for redevelopment, however the son is not willing to sign on any documents, develop agreement,permanent alternate accommodation, registration of the same etc. The family,relatives are trying to persuade him. The society and builder says the family will be considered dissenter and they will proceed. What is the solution? Indemnity Bond by father, mother, daughter suffice? The PAAA agreement can be registered with their sign, will it be legal and valid?