how to create a template category

Good day!
I want to make a template category.
I can not achieve the result that I need to edit files in com_flexicontent\templates\default\

I made a copy of the folder com_flexicontent\views\flexicontent\ and renamed to com_flexicontent\views\flexicontent2\ I edit files com_flexicontent\views\ flexicontent2\tmpl\default_categories.php .... but when I choose the menu flexicontent2 I error (((

it'snt the way
duplicate template on admin template (set a basic name without space)
and in template you have your folder name
to created a template categorie modified categori-item.php
regards

I guess I put it wrong (I have bad English). I need to change the template directory. For example I do not want 1-4 columns as for example 10 columns, I know that this can be done by editing the file com_flexicontent \ views \ flexicontent \ tmpl \ default_categories.php. I can make your own template directory? that after updating FLEXIcontent I have not lost their jobs.

no you are wrong !!
on admin template (flexcontent)
duplicate a default template and work on it !
if you change other php it's disepear after update