Group of fields inside group of fields

Try this version:

$ingredients_group_field_id = $cmb->add_field( array(
        'id'          => RECIPES_THEME_PREFIX . 'recipe_ingredients',
        'type'        => 'group',
        'description' => __( 'Generates reusable form entries', 'cmb2' ),
        // 'repeatable'  => false, // use false if you want non-repeatable group
        'options'     => array(
            'group_title'   => __( 'Ingredients group {#}', 'cmb2' ), // since version 1.1.4, {#} gets replaced by row number
            'add_button'    => __( 'Add Another Entry', 'cmb2' ),
            'remove_button' => __( 'Remove Entry', 'cmb2' ),
            'sortable'      => true, // beta
            // 'closed'     => true, // true to have the groups closed by default
        ),
    ) );

    $cmb->add_group_field( $ingredients_group_field_id, array(
        'name' => 'Fill Ingredients Group Name',
        'id'   => RECIPES_THEME_PREFIX . 'recipe_ingredients_group_name',
        'type' => 'text',
        // 'repeatable' => true, // Repeatable fields are supported w/in repeatable groups (for most types)
    ) );

    $cmb->add_group_field( $ingredients_group_field_id, array(
        'id'          => RECIPES_THEME_PREFIX . 'recipe_ingredients_data',
        'type'        => 'group',
        'description' => __( 'Generates reusable form entries', 'cmb2' ),
        // 'repeatable'  => false, // use false if you want non-repeatable group
        'options'     => array(
            'group_title'   => __( 'Ingredients set {#}', 'cmb2' ), // since version 1.1.4, {#} gets replaced by row number
            'add_button'    => __( 'Add Another Entry', 'cmb2' ),
            'remove_button' => __( 'Remove Entry', 'cmb2' ),
            'sortable'      => true, // beta
            // 'closed'     => true, // true to have the groups closed by default
        ),
    ) );

    $cmb->add_group_field( $ingredients_group_field_id, array(
        'name' => 'Choose Ingredients Group Name',
        'id'   => RECIPES_THEME_PREFIX . 'recipe_ingredients_name',
        'type' => 'text',
        // 'repeatable' => true, // Repeatable fields are supported w/in repeatable groups (for most types)
    ) );

    $cmb->add_group_field( $ingredients_group_field_id, array(
        'name' => 'Choose Ingredients Group Name',
        'id'   => RECIPES_THEME_PREFIX . 'recipe_ingredients_amount',
        'type' => 'text',
        // 'repeatable' => true, // Repeatable fields are supported w/in repeatable groups (for most types)
    ) );

    $cmb->add_group_field( $ingredients_group_field_id, array(
        'name' => 'Choose Ingredients Group Name',
        'id'   => RECIPES_THEME_PREFIX . 'recipe_ingredients_value',
        'type' => 'text',
        // 'repeatable' => true, // Repeatable fields are supported w/in repeatable groups (for most types)
    ) );

Biggest thing I did was remove the assignment of "$ingredients_field_id" and passed in the "$ingredients_group_field_id" variable to the rest of the add_group_field spots. I based my edits on the example-functions.php file that comes with the plugin.

Michael Beckwith, thank you for your answer!

But how I can make the group of fields inside the group of fields?

Code you provide do next:
https://c2n.me/3udU0mf
But I’m trying to reproduce the next functionality:
https://clip2net.com/s/3udVdTD

Can I do this with CMB2 or this functionality is not provided?

So you’re trying to do nested groups?

What type of field is the inner one highlighted in your screenshot?

>> So you’re trying to do nested groups?

I did not know how to explain it. Yes, nested groups.

As you can see, English is not my native language so I will try to explain.

>>What type of field is the inner one highlighted in your screenshot?

This is the clone of the top group.

I’ve recorded a video to explain, what I try to reproduce with your plugin on backend.
https://youtu.be/4kHD1IP-REs

Not sure nested groups like that are going to be possible.

??

As I can see from the code you were provided, add_group_field accept field with ‘type’ => ‘group’ and shows it correctly. But it is not possible to add field to this group as I tried in my first post:
$ingredients_field_id = $cmb->add_group_field( $ingredients_group_field_id, array(

Do you have any plan to add support for this feature? It would be great ??

Yes, the individual ones would be able to do groups, but the issue would be the nesting part, as far as I’m aware.

We would need to ask Justin about support, or if he sees it as being possible easily. I have to believe it’s a fair bit of complex javascript involved to make it possible.

Did you ever find a viable solution here Slams? Even if not an “ideal” one?

I think you can achieve that by creating a custom CMB2 field type that combines several fields and then set that field to repeat within the group. The example in the CMB2 wiki for creating an address field is a great start:
https://github.com/WebDevStudios/CMB2/wiki/Adding-your-own-field-types#example-4-multiple-inputs-one-field-lets-create-an-address-field

The complete code can be found here:
https://github.com/WebDevStudios/CMB2-Snippet-Library/blob/master/custom-field-types/address-field-type.php