Even though this video is a bit outdated and you’ll need to use a Simple List instead of a List Viewer (same component, now with a different name), it’s useful for getting started with a custom list: https://www.youtube.com/watch?v=EVKCEZSMQkc&ab_channel=MrsG33k.
And you’ll also want to learn about Data Sources and possibly Data List Viewers so that you can store user’s values and retrieve them.
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