Thanks for the answer.  The word 'caddy' is fine  [drag along]. I had not used it since I did not know what it does. It seems I was able to do everything I needed to do without having used the caddy.
Well, am just getting used to the script, so it's a journey of discoveries.

it is an administration feature : connected as admin, add your photos in your caddie. Then go to the Admin>Photos>Caddie screen and manage them.

Maybe we should change the name to "admin basket", I think it would be more obvious + add a link "Go to basket" in the "identification" box of the menubar.