Stamp duty for transfer of equity shares

    as Stamp duty of 0.25% is payble to be fixed on share transfer form SH4, in what format that Rs.25 as stamp duty  for market value of Rs.1000 of equity stocks is to be paid ? and How and where ?

either  by way of Franking the document -SH4, or affixing Court fees stamps of Rs20/-  + Rs.5/- or  some other way ,

 is it necessary to be sent to NSE / BSE or R & T agent of theat company