[How To?] Help on user stars

[FatalityServices]

i would like to know, how can i add the correct stars to a thread.

on my memberlist the correct amoun + correct image is showing

where or how can i find the function to call it to show the stars on the thread site (and also how to show the correct ones, i want the site to read out how many / and what stars the current member got to show it on the thread aswell)