Fixing a Bracketed Shelf to a Masonry Wall General problems, solutions, information and advice on fixing to walls of all kinds

[Lilika49]

I am trying to put shelves up and I’m quite new to this. I have seen tutorials online for fitting bracketed shelves but mine has one visible hole and one hidden at the top. How do I go about fixing the screw to the top part?

Many thanks,

Elika