Can we change the icons that appear beside the Locations Link or the Manage Locations Link?

You can, these can be changed through the configuration settings. Locate the fields labeled Locations link icon CSS for the Map Link or Manage Locations link icon CSS for the manage locations link icon.

These icons are imported from the DashIcons library and using CSS classes. Browse the Library (click here)and copy the css for the icon that you want to use. Then paste this CSS class into the field in the PeepSo Configuration settings.

To learn more about this feature see this Help article.