Sorry, I suppose a better question now would be. Typing out [wpdm_tree] shows all the categories in a folder format.
What if we wanted to show only certain categories? How would I remove/add folders from the entire tree printout.
So if I had Cat_1, Cat_2, and Cat_3, and I wanted to exclude Cat_2, how would I have only folders for Cat_1 and Cat_3 appear?