After running a dpm($form)
via hook_form_FORM_ID_alter
I couldn't see the 'Local settings' in the form defintion of the user profile form. I did a search for 'locale settings' on all the code and found the value I need to alter (I think) on line 2016 of system.module
. So I tried:
function MY_MODULE_form_user_profile_form_alter(&$form, &$form_state, $form_id) {
$form['timezone']['#collapsible'] == FALSE;
}
Cleared the cache. Fieldset is still collapsible?