In what kind of scenario would you recommend using the hide option in advanced properties?

in what kind of scenario would you recommend using the hide option in advanced properties?

You can use the hide option from the advanced properties when it is not necessary to show the field, but will still have a big role to play in the form's functionality.

For example, you might need to create calculations in your form, and pass the total to your integrated payment's gateway: https://www.jotform.com/help/275-How-to-Pass-a-Calculation-to-a-Payment-Field 

The PayPal field gets the amount from the field called "Total Fee":

However, you might not like showing the total amount twice, that's when you can simply hide that field, and the form will still work the same:

If you have another question, please open a new thread, we will be glad to assist you.