Hi,
You can test HikaMarket in our demo website.
For the moment, the sameple data for HikaMarket is not complete but it would be improved with time.
HikaMarket multivendor would allows you to create vendors in your website.
A vendor is a special account who sell products in your store. Each time a customer would bought a product which is sold by a vendor, a special "sub order" would be create for the vendor, including only his products and giving him his "vendor total price". This price is processed using the "fees configuration".
You can configure fees for your vendors and you can tweak this fees for each product if you want.
Vendors would be able to edit their product in the front-end and see their orders.
After that, in the backend, you can "compile" orders for a vendor in order to pay him. It would create an invoice with the sum of all selected orders.
Regarding your requirement, I think you can use HikaMarket Business features.
With HikaMarket business, you can set prices with ACL, it means that, a user with a special group (yours salesmen) would be able to buy products with a special price.
You can set payment method with ACL too, so your salesmen could use a special payment method which would automatically confirmed the order.
So, you do not require HikaMarket but HikaShop business !
Regards,