hi Tizzy, happy to know. thnx for yours.
happy to assist: on the quick reply box here, there is a string of tabs.. starting with fonts it looks like, and ending with 2 icons, the second to last icon hm looking like a filmstrip. hit the second to last one and enter from the youtube page the url. this renders a code, for the reply box, and when we hit post, the video shows up nicely.
hope that helps.