How to copy default categories box [2.3.0.2]

I try to copy categories box which is by default on left side in OpenCart, to make new one to be showing same categories but differently on main page in center. I tried to copy files with renaming them (for example to catwall.php and .tpl) but i still don't see copied module in modules list on admin page. Maybe i'm just missing something, or copying wrong files. Which files should i copy to duplicate category module mark as red here?

Be sure to copy and rename BOTH admin and catalog relevant files

Did i miss something? Here is actual copied and renamed files:

Instead of admin/controller/catalog/ **.php
you need admin/controller/extension/module/ **.php

That was it! Thank you!

Glad to have been of help