Question adding info under picture on posts page

Hi,
i wanna add city name under the picture in the post page.
Now i found that this should be generated from within the template in file template/blue_eagle/html/topic/default_profile_vertical.php

But is there anyway i can overwrite that one file and add this without it gets deleted on next update ?
Or do i have to make a complete copy of blue_eagle template and make the changes in that to make that template active ?

is there really noone who can give me an answer on this ?

best way is to create a template override, then it will not be overwritten on a update.

where is the documentation for this ?

i have not been able to find this.

if no docuementation, do you have an example/short description on how theese are made for kunena as you are not using views direct.

hello ?

docs.joomla.org/J3.x:How_to_use_the_Template_Manager