How do you split a product into multiple barcodes in Odoo 8 Warehouse. In Openerp v7, enabling serial numbers would provide an icon which you could click and split as many times as you want. I cannot find that functionality in Odoo v8. Does any one have any idea about this?

EDIT:
Found the answer here:

https://www.odoo.com/forum/help-1/questi0on/how-can-i-specify-unique-serial-numbers-for-the-same-product-during-incoming-shipment-registration-55446

But this process is way too lenghty and slow compared to v7. The originally simple method has been unnecessarily complicated. Is there any module to bring back the functionality as was in v7?