It would be up to Google to show arrows that can change the picture, not this mod.
If you want to move the extra pictures by this mod below the picture included on every page in your Facebook settings so Google sees that one first, do the following-
1) Edit your
headinclude template. Add this code at the very bottom of the template:
Code:
<!-- Extra og images -->
Save changes.
2) Edit the plugin
Insert Open Graph Tags find the line:
Code:
$bpfind = '<meta property="og:type" content="article" />';
Change it to:
Code:
$bpfind = '<!-- Extra og images -->';
Save changes.
That should do it, the default Facebook image will be the first og:image on every page.