If the "Choose category page" option is not appearing in your dashboard's Visual Editor, this option is disabled in your display preferences.
To re-enable it, please follow these steps:
- click the eye icon at the top right of your dashboard to access the display preferences
- choose the "Category Page Identifiers" tab on the right side of the popup
- click the toggle for "Enable category pages configuration"
You will now have access to the "Choose category page" option.