Go to Appearance > Widgets to add your advertisement code in a text widget using the sidebar called "Single Right Advertisement". Shortcodes are allowed in this section.
looks good …. way better than previous segn.tti… !!! the only think I am missing is . . .how many kind of youtube outhere ??(youtube live, youtube project, youtube stream, what else ? where is the link) cause by a good luck, I just discover a youtube stream today !! after 1 year active being a user lol