First, hook into your existing form, find your Form ID.

/**<br> * Implements hook_form_FORM_ID_alter().<br> */<br>function YOUR_MODULE_form_FORM_ID_alter(&amp;$form, &amp;$form_state) {<br>&nbsp; $form['#after_build'][] = 'YOUR_MODULE_form_FORM_ID_after_build';<br>}

Replace MACHINE_NAME with your fieldset group machine name.

function YOUR_MODULE_form_FORM_ID_after_build(&amp;$form, &amp;$form_state) {<br>&nbsp; // Hide the B2B group.<br>&nbsp; field_group_hide_field_groups($form, array('group_MACHINE_NAME'));<p>&nbsp; return $form;<br>}</p>

Remember to clear your Drupal cache for this to work!

Tags: drupaldrupal 7formapifieldset