Can't unhide a form field hidden via builder > field properties > visibility

Can't unhide a form field hidden via builder > field properties > visibility

New to Zoho Forms and testing things out, just created my first form. I configured it with several fields set to hidden via the builder > field properties > visibility > hide field. I did this with the intention of making the fields visible when/if specific conditions are met via rules on visible form fields. However, it appears to me that fields with visibility set to hide field cannot be made visible. Is this true or am I missing something?