On the underside of the frame remove the 2 screws holding the frame in position and the frame will drop down.
Remove oven fixing plate from the shelf.
Loosen the 2 screws at the bottom of the grey housing, slide the fixing plate into position and tighten the screws.
Insert the 2 screws supplied in the second hole nearest the oven from the underside of the plate. Tighten leaving 5mm of the thread showing.
Slide the oven into place. The 2 screw heads will drop into the keyhole slots on the shelf. Pull the oven towards you for its final position.
Tighten the 2 screws from the underside of the shelf to lock the oven in position.
Replace frame as per instruction 2 and place draw back into position.