When the MultiRatings and Reviews add-on is active, the Reviews section on a listing shows the overall rating above your own rating categories. The label is plain text from the plugin, so you change it with a translation, and the stars can be swapped for your own image in the review design settings.
Change the “Overall” text
Translate the string to the word you want, even if your site is in English. How to change just one language string shows the quickest way. If you already use a translation file and the string is missing from it, update the file from the latest plugin template so it picks up new strings, then translate it. How To Translate Or Localize GeoDirectory covers that.
Use a transparent image instead of Font Awesome stars
- Go to GeoDirectory > Settings > Design > Reviews.
- Click Show Advanced so the advanced options appear.
- Set Rating type to Transparent Image.
- Upload your image in Rating transparent image and save.
This changes the main rating stars. Each rating category added with MultiRatings has its own style, set when you create the rating. See How to Add New Ratings and Rating Styles?.
If the Upload Image button does nothing, another plugin is usually breaking the media uploader on that screen. Turn off other plugins one at a time to find it.