Here you can learn about the steps to add Warehouse after Shipment is created.
Step 1: Login with Fresa Gold, Navigate to particular Shipment. (Fig.1)
Step 2: Select the organization tab. (Fig.2)
Step 3: Select the organization as Warehouse. After selected the organization now click add organization. (Fig.3)
Step 4: Now select the name of the organization and save. (Fig.4)
Step 5: Now the Warehouse organization is successfully added. (Fig.5)
The above blog post explains about the steps to add the Warehouse after Shipment is created.