Transfer of shares from family account

GujaratBull dotcom (3 Points)

08 September 2021  
My clients had joint DMAT account in which father was first holder ,son as second holder and, daughter as third holder . After demise of father son has become first holder and daughter second holder . Father wanted to give all stocks to daughter and that's why the son wants to transfer the shares to her sister. In wich category this can be done . Family transfer or gift ?