1. Go to admin → extras → ratings and click on the button you want to be counted. Then, click on "edit rating".
2. Choose "yes" in the field "als Profilfeld verwenden" (this area is already translated and will be available in english with the next template update).
3. Go to admin → users → profile settings and edit the rights. Who should see the counting and where do you want it to be shown (beside postings and/or at the members list)?
4. Go back to your forum and check out your new feature!