WP Dashboard > Avas > Theme Options > Header – From this tab, We can control some general settings for the Header, like

• Select header layout (boxed, width).
• Enable/ disable header overlay for home page and inner pages.
• Enable/ disable Sticky header.
• Enable/ disable elementor header.
• Select elementor header template.

N.B: To use an Elementor header template, you have to create a header template first. Go to WP Dashboard > Templates to create a Header template.