ISTWCMS-5551: adding help text to office hours exception days

uw_ct_service.module

@@ -116,6 +116,9 @@ function uw_ct_service_form_node_uw_ct_service_form_alter(array &$form, FormStat
   ];
   $form['#attached']['library'][] = 'uw_ct_service/location_autofill';
   $form['#attached']['drupalSettings']['uwCtService'] = _uw_ct_service_load_locations();
+
+  // ISTWCMS-5551: adding help text to office hours exception days.
+  $form['field_uw_service_hours']['widget']['office_hours_exceptions']['#description'] = '<p>Exceptions further in the future will display once the exception is under one week away.</p>';
 }
 
 /**