How to edit the header of the site as an admin?

For an admin to edit the header of the site he needs to do the following:

Firstly, he needs to log in to the admin panel.
Then go to the ‘Header sub-menu under the ‘Website’ menu.
There he will be provided with two functions.
He will be able to make the site header sticky as well he will be able to set the icon of the header.
Through these form fields the admin will be able to edit the header of the website.