To add (or edit/delete) a Traffic Source to the GERU canvas, here's how you do it.
When you are ready to connect or add a Traffic Source(s) to your funnel, simply drag-and-drop an Entry point onto the canvas:
Next, click the "Add New" button:
Enter in the details about this Traffic Source as shown here (Don't forget to click the "Save" button):
Your new Traffic Source (Facebook Ads) has been added to the Entry Point on the canvas. Repeat this process to add additional Traffic Sources.
To connect this Entry point to a funnel Object, drag and move the Entry point close to a Funnel Object. These objects should auto-snap together.
To manage all Traffic Sources, use the Right Side Traffic Sources Manager. Click the "Gear" icon as shown here...