Pulling in Bin Quantities Automatically

Hello:

In marketing documents in SAP Business One, such as Goods Receipt POs and Deliveries, is it possible to have the line item quantity allocate to its bin automatically?

It would be nice to be able to do so, rather than having to click on the Golden Arrow to the left of the red 0.

Is this accomplished by defaulting a bin location in the "Default Bin Location" field for the warehouse within the Inventory Data tab of Item Master Data?

If so, what is the difference between the Default Bin Location and the First Bin Location fields?

Thank you, so much!

John