I'm using a foreach to get membership level information:
  foreach ($aMemLevels as $aMemLevel) { 
     // Add 'mlevels' array to $aForm['inputs'] array
  }
I have a main form variable that hold a large array: $aForm
The form is setup like this:
$aForm = array(
     'form_attrs' => array(
     'name'     => 'menu_access', 
     'action'   => BX_DOL_URL_ROOT.'m/memberships/main_menu',
     'method' => 'post',
     'onsubmit' => 'saveMenuItem(this); return false;'
     ),
    'inputs' => array(
        'mlevels' => array(
            'type' => 'checkbox',
            'caption' => 'Check to enable',
            'name' => '1',  
            'value' => '1',
        ),
    ),
);
I am trying to find a way to add an "mlevels" array to the 
$aForm['inputs'] array, for each iteration of $aMemLevels.