thanks for the reply,
but first the manufacturer (company or person) has to register on digitalsky (https://digitalsky.dgca.gov.in/) with the chain certificate (dont know what that is, may be ssl), the drone has to be in a lock mode. once drone is activated after checking location through gps it can fly. there is UIN registration number and so on.
everything is in this doc from page 29.
http://www.dgca.nic.in/rpas/DGCA%20RPAS%20Guidance%20Manual.pdf
some local manufactures has registered their drones which use pixhawk ardupilot.