I am battling trying to learn to use this pgr because it is powerful and useful. So one goes to tutorials and get a great explanation about two ways to tag your photos. 

Then after you've wasted plenty of time, you do find only 2009 had a left panel. ForA, and what not tell you plenty about it. However I have not read yet why it disappeared. Meanwhile I am struggling trying to use 'nested' tags in "add a descriptive tag" where sometimes I have many nested tags all together separated by a fwrd slash....How do you pick one??? Under 'manage tags' it's ok there they are displayed as a tree but you can't tag from there!