Before editing the Header and Footer first you need to enable Header and Footer post type from elementor settings
- Go to setting from Eelementor
- Select Header, Footer checkbox
- Save it.
First, from admin, you need to select Header Post Type
Then you will get All header Layouts here and you can make your new header as well.
Then select any header you want to edit and just click to edit with elemtentor
Then you can easily add site logo, menu and as like you want using elementor. You can add anything using drag & drop system