Main Header Bar
This is the main menu on the top right corner.

Add/Change Menu Items:
Go to Appearance > Menus and put a check on “Main Header Bar”.
Change Colors and other options:
Go to Appearance > Customization > Pjax Blog Settings > Main Header Menu and change options.
Change Description of Menu Items:
This has a description area below the title and it can be changed at description textarea on each menu item. If you cannot find it in a menu item, it must be disabled by your site setting. In that case, please go to menu edit page (Appearance > Menus) and click “screen options” on the top right corner and put a check on the description to show it.
Mobile Menu

You can make it appear on mobile and tablet only by changing a theme option. To do so, please go to Appearance > Customization > Pjax Blog Settings > Mobile Menu and change “Show In” option to make it suitable for your website.
Add/Change Menu Items:
Go to Appearance > Menus and put a check on “Mobile Menu”.
Change Colors and other options:
Go to Appearance > Customization > Pjax Blog Settings > Mobile Menu
Below Header Bar
*This menu is available in pro edition.

This menu area is suitable for displaying a lot of blog posts. It can display menu items with images whose set as featured images on each post. To do so, please go to Appearance > Customization > Pjax Blog Settings > Below Header Menu and check “With Image” in Type of Menu section.
*Note: When you select “With Image” option, categories and taxonomies will be automatically expanded and blog posts in them will be displayed in the menu.
Add/Change Menu Items:
Go to Appearance > Menus and put a check on “Below Header Bar”.
Change Colors and other options:
Go to Appearance > Customization > Pjax Blog Settings > Below Header Bar