When you create a new page, you will have options to change elements of Header :
Show heading: Tick this box so that the heading can be shown
Menu style: Choose one menu style in the drop-down list or you can select the option of Using Menu Style in Customizer
Footer Style: Choose one footer style in the drop-down list or you can select the option of Using Footer Style in Customizer
Header setting: there is a drop-down list containing Header types to select
Menu Logo: Upload a Logo image
Navbar Position: There are 3 options that are Use Navbar Position in customizer, Static Top and Fixed Top.
Static Top, in this case, the NavBar does not move. It means that when you scroll down on the page and let the mouse pass the NavBar, you will not see the NavBar displayed on top. However, Fixed Top will allow you to see the NavBar when you scroll down the mouse.
Home Slider: tick this box to enable Home Slider which will be shown on the top of the site
♣ Note: In spite of what you set up in Customizer, all options in Page settings will always be prioritized