external store quantity override

-- HikaShop version -- : 5.1.0
-- Joomla version -- : 5.2.2
-- PHP version -- : 8.1.28
-- Browser(s) name and version -- : chrome latest, firefox, etc.

Hi guys!

Again, I have a complex question: is it possible to manage external stock? It would be important to be able to order only the existing quantity (e.g. 2pcs), but to show the quantity increased by a value stored in a custom field (e.g. extstore) and the quantity selector also uses this value (e.g. extstore value=4, so the full value is 6pcs)?

This would be important because I can't put what is in external stock into the order, I can only contact the customer via email (e.g. RSForm form).

This way I could manage the order itself (original quantity) and the enquiry (extstock quantity) in one interface.

My question would be how can I override the default quantity handler in hikashop, is there any solution?

Thanks in advance!

Pre-order is not working well for me because you cannot put the maximum quantity in the cart at once. So you have to consume the default stock first, and then you can only use it afterwards.

Thanks for your help!