That's for adding it to any of the general areas. Otherwise, the main video upload page is pretty self-explanatory. From "Uploads" on the main menu, choose "upload a video." All you need is the video's link.
Find video. Open. Go to your answer, hit 'insert', 3rd along the top. Choose 'insert video'. A box will appear named, 'Insert/Edit Video' which has two tabs; 'General' and 'Embed'. Choose the 'Embed' tab. Back to your video and R-click on it. A list of options will appear, among which will be 'Copy Embed Code'. Choose that one. Go back to your answer and the 'Embed' tab. R-click anywhere in the frame and select 'Paste', followed by the rest of your answer. Then 'Post Reply' as normal and you should see your video ready to play.
Due to copyright issues, some videos will not play outside your area of the world. There is supposed to be a fix for this, but I've tried it and it didn't seem to work. Just a heads up.
This post was edited by Benedict Arnold at December 26, 2016 7:23 PM MST