HI,

       i my knowledge,

       if you got RP approvel for you family, just go to the any imigration office

       and show them the RP approval copy and passport of you family they will

       do a stamp in passport stating new RP approvel number,that will valid for  3month,they charge 500/passport. in between your family have to do medical and finger print,, then you can stamp RP and Get ID

Thanks