Primary Header is a default header provided by the Astra.
You can customize the primary header with this option. You can find the setting under Appearance > Customize > Layout > Primary Header
You can set three different positions for the logo in the header.
This option will set the logo on the left side and navigation menu to right.
This option will set the logo to the center of the header and above the navigation menu.
This option will set the logo to right side and navigation menu to the left.
It allows you to add a custom menu item at the end of the primary menu. You can select a custom menu item from the drop-down:
It will add a search icon for a search box at the end of the primary menu. When you click on the icon search box will appear.
It will allow you to insert text and HTML element code. You can insert a call to action button, contact number, email address etc.
You can add a widget to the header with this option.
After selecting widget option as a custom menu item, you will able to set a widget from Appearance > Customize > Widgets > Header