Activity Duration in Hours extension NOT working for CiviCase
You could try changing this line in activityhours.php from:
if ($formName == 'CRM_Activity_Form_Activity' &amp;&amp; !CRM_Utils_Request::retrieveValue('snippet', 'String')) {
to
if (($formName == 'CRM_Activity_Form_Activity' || $formName == 'CRM_Case_Form_Activity') &amp;&amp; !CRM_Utils_Request::retrieveValue('snippet', 'String')) {
You'd probably also have to add some selectors in the .js file, e.g. whereever it says .crm-activity-form-block-duration also add .crm-case-activity-form-block-duration
You could post a feature request at https://lab.civicrm.org/extensions/activityhours/-/issues, but if you're able to also post a merge request with some tested code changes that would be best.