Question about Arizer 3

Hey y'all, Just got my Arizer Solo 3 and I have a question about loading the stem.

In my POTV Lobo i use dosing capsules which makes it super easy.

One of the reviews I watched said to be very careful about not letting the herb touch the oven because it'll combust.

That being said, how do I load my stem and flip it over to seat in my Solo without the herb falling down toward the oven.

Can/should I use ungrounded herb?

Am I missing something? I don't want to destroy a brand new beauty like this because I am a bone head.