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

