How can I get a camera to rotate around a character only along the Y axis?

I am trying to use a camera outside of the TP character’s camera rotate around a spot i choose but I can’t find how it’s done, I only need it to rotate on the Y axis around a specific location.
In MyCharacter blueprint of the TP project in the Mouse input zone it uses Add Controller Yaw input but I can’t see how it works exactly.
Thank you