To add to favorites: Go to portfolio. Click the icon that says "Add to Favorites."
To delete a favorite: Go to My Stuff, View Favorites, find the person you wish to delete, and click "Delete" under that avatar.
Maybe I need to lay off the Ambien®, but for now, where do I find the "portfolio" link you suggested?
I looked in "My Suff", on my profile page ... Jeesh!