Validation Biographical Info section

Summary:

Hi Experts!

We just had a requirement from the customer to validate the fields in Biographical Info section under Personal details.

Briefing:

We have fields under biographical info section which are mandatory, so unless the employee edits the region it wont be mandatory. So if the user edits something in demographic info section and clicks submit while keeping the mandatory attributes under biographical info untouched, it is allowing the user to submit the results even though the fields are blank(as it becomes mandatory once it is clicked.) so the customer wants to address this issue and we suggested ACR. We could figure out the rule, but the issue the rule triggers under contact info also if the user has no value for