Hold pegboard in desired position
Using a spirit level check level, use a pencil to mark hole positions through mount holes onto the wall
Remove pegboard and drill holes with 6mm masonry drill bit
Make sure holes are deeper than wall plugs supplied
Place pegboard back on wall and insert plastic wall plug through the panel and into the drilled holes, as per image.
Tap screw in gently and tighten a few turns with a screw driver
Push screw cover into opening to cover screw