Previous employment details should not be mandatory for Fresher

If candidate is Fresher - Previous employment/experience details Should be non-Mandatory

If Candidate is Experienced - Previous employment/experience should be Mandatory. In the external Candidate job Application.

In Job application flow we have made the 'Experience' Block Mandatory as below. If the candidate is Fresher the Mandatory block is creating an issue as data will not be available for Fresher. How can we manager the 'Fresher/Experienced' along with 'Previous Employment'?