Need help with Skip Logic and Hidden Fields in the Registration App

@darius It only shows how to hide and show sections.

What I am trying to do is as follows:

  1. I have added an identifier field using @craigappl method which works instead of the manual identifier Need help defining the app.json for multiple patient identifiers in the registration app and identifier location error

  2. The identifier is not required so at times its left blank so the validation fails. I would like to disable the field when empty before submission so that its not sent

However following your link to registerPatient.js I see submit functionality here https://github.com/openmrs/openmrs-module-registrationapp/blob/ca3a9430220c941a75999438e2c63feae139efb8/omod/src/main/webapp/resources/scripts/registerPatient.js#L151-L168 but do not see how to intercept the submit call