Thx for the answers but those options were useless to me.
I already found the solution... is really simple that i don't understand why kentico don't have that in documentation...
Roman Hutnyk thx for the hints, with that i found that you can filter page types in the CSS list menu web part.
In the CSSListMenu web part then Content filter / Page types and then you select the types of pages you want to be displayed in the main manu.
Cheers!