l do not know how to add that either. But you may find the answer in the forum. If you can not find the answer there, then start a discussion in the forum and ask for help. This is what Ning Creators is all about, helping each other with advice and tips.
Even if a creator has been on Ning for years, there is always new things that Ning add that we are all learning. l been here 3 years and l am still new at these things. You will love learning new ways to improve your site.