JetThemeCore plugin assists you while building sites from header to footer providing a simple way to create and adjust header and footer templates, archive, and single post pages.
To get an access to JetThemeCore library, go to CrocoBlock > My Library in the admin panel. It allows adding and editing the existing theme part templates.
If you want to build a brand new theme part, click ‘Add New’ button, choose the type of the theme part (header, footer, section etc.), and click ‘Create Template’ button.
Once a new template is created, you may edit it with the help of Elementor and a range of sections assigning them to various pages and positions.