Multiple Shipments For Same Order

How can we create multiple shipments for the same order , e.g. if the order has 3 items for 1 vendor and the vendor currently has 2 of them in stock right now and wants to ship them right away and the 1 which is left will be shipped once its restocked which is probably in 2 days time , how can we create multiple shipments for the same.



As of now it seems only 1 shipment can be created after which the Shipment button disappears.

Ah Figured it out was not setting the quantity of products while shipping.