CTA under every blogpost

Hi,

I liked to place (automatically) a call to action button under every blogpost (or only under posts of a specific category …). Is there a way to do this with enfold? Or is there any plugin which can do this?

e.g. like in this blog
https://www.trafficdesign.de/knowhow/social-media/facebook-kampagnenplanung-struktur
There is a cta at the end of the blogpost – and after the author box. It says “Brauchen Sie Unterstützung bei diesem Thema?”

I am looking for a solution which enables me to change the cta at one place for all my blogposts.

Thanks in advance!!!!

Chris