[tom.58]

I first added a new source on my NAS called Concerts. I then added my live concert movies I had in my music video folder over to the concert folder. 
I then going into settings/skin.
Then go to customize setting
Now on the left side scroll down to where you would like your new item. Then hit the +  icon.
This screen shows up. I won't fill in any here but took shots of what I have already.
You will fill in the labels as to what you would like. Then change action is shown in screen shots. I use video library, then sources.
I add my Concerts folder as source.
.........

Well, thank you so very much for your detailed help setting this up !!! Greatly appreciated !!
Will try that tomorrow... my own exercises on the same thing failed....

Always getting all of the concerts into the "Movie" item of the main menu and none into "concerts"