General field parameters

Add label, hint, description or start group of fields

Preview setting (as image):

'preview' => get_template_directory_uri() . 'some_url.jpg',

Radio button can have several previews:

'field' => array(
    'type' => 'radio',
    'label' => esc_html__('Radio Button', 'my-domain'),
    'submenu' => esc_html__('General fields', 'my-domain'),
    'options' => array(
        1 => 'One',
        2 => 'Two',
        3 => 'Three',
        4 => 'Four',
    ),
    'previews' => array(
        1 => get_template_directory_uri() . 'some_url_1.jpg',
        2 => get_template_directory_uri() . 'some_url_2.jpg',
        3 => get_template_directory_uri() . 'some_url_3.jpg',
        4 => get_template_directory_uri() . 'some_url_4.jpg',
    ),
    'description' => esc_html__('Manage create listing page section titles front-end and admin', 'my-domain'),
),

Groups

You can start group from single field:

'group' => 'started'

And end group in another field. All fields between them will be grouped:

'group' => 'ended'

Group may have title:

'group_title' => esc_html__('Group title', 'my-domain')