I use delta theme. I enable the options:
Enable Category Block
Enable FAQ Items Block

But nothing changes on home page or elsewhere.

Do i miss something?

You must add them to page where you want it

so these options are for what use?

also on bottom of the page i see the code to add button, i dont see any code for blocks. Is there any help file anywhere?

Thank you friend for your good work!

These are related to FAQ landing page

Alright.  Thank you very much

Is there some code that i can add on homepage to add it as block? Or only with totally custom work?

@KaloSex
No such code probably exists.