Addition of labels view for taxonomy field?

Hi,

Yes, it's possible.

You can use the taxonomy_advanced field, and set the field_type to select_advanced (default) and enable multiple to true, like this:

'fields' => [
    [
        'id' => 'purchased_tags',
        'type' => 'taxonomy_advanced',
        'taxonomy' => 'your_tax',
        'name' => 'Apply tags when purchased',
        'field_type' => 'select_advanced',
        'multiple' => true,
    ],
    // Other fields
]