Before installing Venetian blinds, make sure that you are aware of all component positions inside the track.
The brackets can only be installed in between the components of the Venetian head rail.
Drill the necessary holes & insert wall plugs ( recommended 5.5mm drill bits for 6mm wall plugs or use 5mm drill bits for 5 / 35 hilti nail ).
Insert the screw / hilti through bracket fixing hole and tighten, but not too tight as bracket needs to swivel close into the lock position to secure the head rail.
Position the head rail up over the swivel bracket and push closed the small extension arm to the left.
Unlock the blind by pulling cord to the centre of the blind and slowly let go of the cord until the blind reaches the sill or required length.