Hi on a recent topic @mark_bower had a question on a forum feature.
Seems like information on usage is not quite readily discoverable so am posting links to a couple of items discussing the forum.
The forum is based on Discourse which is the base used by various software projects. The information in the links is fairly close but may vary slightly depending on what the projects administrators decisions. But here goes:
And
Understanding Discourse Trust Levels
Will admit was not aware till recently of these until I was promoted to Member. Most of my knowledge till then was based on reading the forum and picking up things as I went along.
Hope this is helpful
Edit add link to Trust Level Permissions Table (graphic representation)