How to display a menu for logged-in users only without using an app using the Shopify theme "Dawn"

In addition to the title and description, you can add various unique items to the Shopify collection (product list) page, but it is a bit inconvenient to have the same content displayed every time from the second page onwards. This is an example of settings for the theme "Dawn".

How to display a menu for logged-in users only without using an app using the "Dawn" theme

Setup Step 1: Create a "members-only menu" in addition to the normal main menu

Setup Step 2: Customizing "header.liquid" and "ja.schema.json"

Step 3: Change the header settings in the theme editor