module, menu and hikashop options links

Hi,

today i lost myself among all modules, menus and links as category and products.
when i create joomla module of hikashop content, i discovered that in addition to standard module creation in joomla Module part, hikashop as its own copy of this module with next options.

when you create such module to display category, hikashop create a hidden menu with menu items (published), that have modules (hidden)..
so i'm completly lost.

see screenshot 1 and 2...

now i don't know what to do, how to use that component.
please where can i find a clear and comprehensive documentation how your component works... because i'm starting to become nuts
thank a lot.

A.