Untitled

add_action('marketking_order_statuses_custom', function($user_id, $status){
   ?>
   <option value="accepted" <?php selected($status, 'accepted', true);?>><?php esc_html_e('Accepted','marketking-multivendor-marketplace-for-woocommerce');?></option>

   <option value="dispatched" <?php selected($status, 'dispatched', true);?>><?php esc_html_e('Dispatched','marketking-multivendor-marketplace-for-woocommerce');?></option>
   <?php
}, 10, 2);