Add a custom calculated field in the Grand Total section of a quoted worksheet

The grand total footer can be found in modules\Quotes\clients\base\views\quote-data-grand-totals-footer\quote-data-grand-totals-footer.php.

Here you could add an additional field and install the customized metdata file in \custom\modules\Quotes\clients\base\views\quote-data-grand-totals-footer\quote-data-grand-totals-footer.php

$viewdefs['Quotes']['base']['view']['quote-data-grand-totals-footer'] = array(
    'panels' => array(
        array(
            'name' => 'panel_quote_data_grand_totals_footer',
            'label' => 'LBL_QUOTE_DATA_GRAND_TOTALS_FOOTER',
            'fields' => array(
                array(
                    'name' => 'new_sub',
                    'type' => 'currency',
                ),
                array(
                    'name' => 'tax',
                    'type' => 'currency',
                    'related_fields' => array(
                        'taxrate_value',
                    ),
                ),
// ADD CUSTOM FIELD HERE in the same way as the other fields                
                array(
                    'name' => 'shipping',
                    'type' => 'quote-footer-currency',
                    'css_class' => 'quote-footer-currency',
                    'default' => '0.00',
                ),
                array(
                    'name' => 'total',
                    'label' => 'LBL_LIST_GRAND_TOTAL',
                    'type' => 'currency',
                    'css_class' => 'grand-total',
                    'convertToBase' => false,
                ),
            ),
        ),
    ),
);

But I suppose you have already some customizations in your system. So, you should discuss that with the developers of the the other changes.

Thank you. It works.

Thank you. It works.