1. How to edit the Transparent Header (seen on Homepage)
To begin, navigate to the Toolbar > Edit with Elementor > Header Transparent
Or go to Templates > Theme Builder > Transparent Header > Edit with Elementor. Control the layout, conditions, rules and styles of the header template.
2. How to edit the solid-colour Header (seen on the inner pages)
To begin, navigate to Templates > Theme Builder > Header > Edit with Elementor. Control the layout, conditions, rules and styles of the header template.
Please check these guides for further information:
Create Headers Using Elementor
Guide to Vamtam Elementor Builder
3. How to edit the logo image
You can edit the column and the Site Logo styles:
https://docs.elementor.com/article/368-column-overview
https://docs.elementor.com/article/453-site-logo-widget
To set the logo size, visit the Style section:
You can edit the Logo image, Site title and Tagline in Customize > Site identity:
You can check this guide for more details: Vamtam Elementor Themes: How to edit the Logo image, Site Title and Tagline?
2. How to edit the menu/navigation
Click the "Edit column" icon to edit the navigation background, borders and layout.
https://docs.elementor.com/article/368-column-overview
Click the "Edit Nav Menu" icon to select the menu and edit the navigation styles and layout. The Lagar theme has two menu positions left and right - you have to set the menu for both locations.
https://docs.elementor.com/article/244-nav-menu
3. How to edit / remove the search icon
Click the "Edit Menu Cart" icon to edit the element's icon, alignment, styles, etc.
https://elementor.com/help/menu-cart-widget-pro/
You can also check this guide: How to edit the Cart overlay background colour? - Lagar Elementor Theme