Purchase item only with OK's seller

-- HikaShop version -- : 3.2.2
-- Joomla version -- : 3.8.3
-- PHP version -- : 6.5.2

I need that when a customer purchases a product, payment is not required untile the administrator has not changed the status.
Basically I have before to check if the product is in stock, avoiding that the customer purchases a product that is sold out.

Step:
1 The customer place the order and at the moment he doesn't pay nothing
2 I receive the "interest in buying" and check if the product is in stock
3a I send the notify to the customer and I ask to pay, before to process the order
3b I send the notify to the customer and I inform the product is not available.

All this it is possible?