My parents have self earned properties and assets. I am their only son. They want to write a will for all their movable and immovable assets and properties. Is it possible to form a trust (or something equivalent ) comporising me and some of my very close friends and make will to make this trust owner in my parents absense? Also, is it possible to state in the will that unless everybody in the trust is consenting, the property can not be sold or gifted to anybody?