Thread:BunsenH/@comment-30754266-20170103073215/@comment-24577221-20170103170751

It depends where you want to add it, and which editor you're using.

If you're using the Visual Editor, when you're editing a wiki page, look near the top of the editing window. On the line below the "Save page" button, the icons from left to right are for adding video, a picture, or a gallery.

If you're using the classic editor, when you're editing a wiki page, there's a section to the right of the edit window "Add features and media".

In a forum or discussion, such as this one, there are icons below the window. The last two icons are for adding pictures and media.