Click to "Theme Builder" in "Templates"
Click to "Add New"
Select the type of template you want to work on Header, Footer, Popup...
Enter Name for your builder -> Click button "CREATE TEMPLATE"
In our product for easy customize header we use own developed Drag&Drop Builder Powered By Elementor We have created special modules for uses: Site Logo, Site Title, Page Title, Nav Menu, Search Form, Cart...
Click to arrow top stand "Save" button -> Choose "Display Conditions"
Where Do You Want to Display Your Template? Wherever you want -> "Save & Close"
To edit footer.
On the topside bar, Edit Elementor Tab --> Click Footer
There is Elementor Editor, you can edit Logo, menu, social..for footer.