For the majority of use-cases there is no need to use the advanced settings available for card fields, they are however available for you if needed.
You can control how each card field type behaves under certain circumstances.
Card Field types
Static value - the value will be same for all member cards, if updated all member cards will be updated
Get value from user input - user will be asked to input the data in the registration/signup form
Starting field with value, with ability to update from automations and scanner - if changed it will only be used for future member cards, existing member cards will not be changed
Value from form URL parameter
If you have further questions about a more advanced use-case don't hesitate to reach out to us.
Related
Card Field Basics
Everything there is to know about card fields.