Start and Portal Pages have menus on top/side
The way WP-Client components appear in the browser is based on the Theme Link Pages.
Each of these pages is created to give you the ability to use any additional options or selectors provided by your theme to modify the way WP-Client components are displayed.
For example, if you want all of your Start pages to appear with no sidebar (full width) and your theme provides a meta box with a dropdown menu allowing you to choose from the available page templates, then you would navigate to the WordPress page that WP-Client created as a Theme Link Page for your Start pages.
Your setup will look different, depending on the theme you have active, but for this theme, If you select “Full Width”, the Page will do away with any side-menus or toolbars that the theme inputs by default.