https://youtu.be/KQ1N28gYvw8
That's the short one, but the long one goes on the same way. (was not that easy to hold the camera and demonstrate at the same time....especially since I've lost 50% of my dexterity in last 5 years. ;) (Tyler.....if that question keeps coming up, you are welcome to that video...just threw it together tonight, not fancy, but at least it answers the question.)
Its in the adapters section, but there's more than one....and I don't have them memorized. :) Too many tubes sizes for one thing. Doesn't the manual have a little chart that specifies clear tube sizes for them? I'm sure TylerR will be along, but he has a family and a wife that comes first. ;)