Can somebody please explain how I can get Guardian to highlight all non home favourite matches in Guardian?

I need this rule to look at all the match odd markets, & then enable me to highlight via a shortcut to remove all matches where the away team is the favourite (away odds less than home team), so then am only left with the games where the home team is the fabourite (so home odds less than away odds).
I have worked out how to create a shortcut, but dont know how to get Guardian to scan through all 250 (1000 markets in total) matches selected in my Guardian. It is 250 games, because for each match I need to use 3 other markets (see attached image).
It would be great if it selected all 4 markets for a specific match if the away team is the favourite. If this is not possible, then if it could just highlight the match odds market, I could just remove the other 3 markets manually, if it just highlighted the match odds market for me to removed that market via the shortcut.
I always set up with 4 markets for each match because my Excel script requireds odds from match odds, correct score, over 1.5 & over 2.5 goal markets.
This is because I only ever trade matches where the home team is the favourite, but Guardian gives me every match for the given date.
I have seen a link where it has a odds filter.baf file but that places an actual bet into Betfair, which I dont want it to do. I'm also a novice, & not used the rules/triggers before, so dont know how to change that file to do what I want.
Thanks guys & appreciate any help
