The term "factory" was created because Memphis is not just a simple queue.
A factory presents the application/use case that the user requires to build, and, within it, all the stations (queues) that establish the use case.

Factories list

You can edit/delete each of the factories.
Also, you can quickly edit your factory by clicking the box shown below.

Create a factory

Create a new factory by clicking the "Create new factory" button.
Next, just Fill in the factory details.