SharePoint - Starting Site Workflows Manually

We probably all know that SharePoint 2010 allows you to create a new type of workflow: Site Workflow, these workflows are not bound to a list.  Site workflows are perfect for those one-off jobs that you'd trigger manually.

What's not obvious, to me initially, as well as to many other people, is how does a user actually start one off?

Here's the solution, in one picture, I bet half of you have never noticed this before even though it's always been there from the very beginning.