Hi Tom,
Need some custom form with hidden fields & Date input and edit/update above fields in admin Panel.
Scenario:
Customer submits product service form.
Tracking issues, updating status whether solved/pending, sort/filter based on date, issue pending etc..

You can replace <?php echo $hm->Zb('rs:def:field-name'); ?> with a hidden field like <input type="hidden" name="field-name" value="..."/>