which code to add and where

Hello,

I installated the plugin and made association between tags and images but, after having read all posts and information i could find on internet, i still don’t understand :
– which lines of codes to add in the template and
– where to add them, in which file ?

I guess it’s not so complicated but when your level is slightly above zero, it is.

Thanks in advance,

https://ww.wp.xz.cn/plugins/taxonomy-images/