Candidate calendar field

I am considering developing a Plugin myself that will add a calendar field to the standard WP Job Manager candidate field set to go alongside their resumes and applications on their dashboard (a calendar per candidate if required). Does anyone have any suggestions on how to approach this?

Many thanks.

The issue does not name any files, tests, or entry points; it asks for suggestions about adding a calendar field to the candidate field set and dashboard. First clarify the calendar's required behavior and integration with resumes and applications, then locate the candidate-field and dashboard extension points. Done should include an agreed scope and a tested calendar-per-candidate implementation.

Written by the indexing model from the issue text.