Move fields from additional settings to field_group on node edit forms

Question

I try to move some settings, for example the comment or menu settings, from the "additional settings" to my own field group created with the Field Group module.

As there is no way to access the fields under additional settings via the gui I thought about moving them via a form_alter hook, but with no success.

Update

Here is the code i used in a custom module to (unsuccessfully) move a field:

function form_tweaks_form_alter(&$form, &$form_state, $form_id) {
  if(isset($form['#node_edit_form']) && $form['#node_edit_form']) {
    // Adding the comment settings to my field group
    $form['#group_children']['comment_settings'] = 'group_sidebar_tab4';

My module's weight is lower then the weight of the field group module and when I use the above code on other fields added to the content type, for example an image field, it works just fine.

Update 2

Just to make sure, I am talking about node forms. I want to move certain elements that resist in the "additional settings" vertical-tab-group to other groups.

Answer 1

Display Suite

-module which changes the manage display page to allow exactly for that and moving title, links, comments and way more useful features like changing/resetting field and views templates, linking between displays, dynamic & block fields, moving fields to a block just to name a few. It could replace views in those cases where you mainly use views to have more control over the output. Thank You.

Answer 2

After a good amount of researching I stumbled upon the Renderable Elements module.

It is still a bit experimental, but it makes a bunch of form elements available for rearrangement that are hard-coded in the node module and therefore not accessible via manage fields.