Hello,
1 - That's pretty a simple workflow. ( And I'm afraid that e-commerce marketplace an IT industry are two things very very different )
See:
www.hikashop.com/support/documentation/1...or-presentation.html
HikaMarket does not modify the payment system of HikaShop.
Each time a customer made an order, HikaMarket will create what we call sub-orders.
A sub-order is a copy of the order but for a specific vendor. It will only contain the vendor's products.
The customer have his order and is still notify the same way : When his order is modified.
Modifying a "sub order" will not affect the main order unless all sub-orders have the same "order status".
You can read more details about that in the documentation I just mentioned.
1.2 - Each time an order (or sub-order) is modified, an entry is stored in the history.
1.3 - Like I wrote, HikaMarket do not change how HikaShop is working.
So if you do not confirm the customer order ; the customer cannot be notify of it.
You need to confirm the order and check the box to ask HikaShop to notify the customer.
But I'm afraid that's not related to HikaMarket but only to HikaShop order system.
2 - The order status notification email of HikaMarket is for the vendors.
So they can be notified when their "sub order" is modified. Nothing less, nothing more.
3 - As previously, HikaMarket do not change how HikaShop is working.
The customer will have his invoice for his order and the vendor can generate an invoice for his "sub order".
Regards,