How to Click and Drag photos to an existing collection

[monia13]

I'm having such a hard time adding several photos at once to an existing collection. Not sure what I'm doing wrong as I am following the insturctions. First I select all the photos by clicking shift and the 1st photo, then I select the last photo. All photos I want to add are highlighted. But I can't drag all the photos at once. When I try to drag, the 1st photo is only selected. What is are the correct click, drag and drop key strokes to get it right?  Dragging and dropping one photo at the time is just not feasible.

[billk1956]

Thank you.  I wonder why you Must drag from the center of the photo.  Seems strange.  Thanks again. Bill

[Just Shoot Me]

Not necessarily the Center of the photo but from the Photo itself and not the gray boarder.

[Bridget1234]

Well that's been driving me mad so thank goodness I found this answer. Thank you very much. 

[sklarer]

Here it is, 2013, and the problem may have gotten worse. (Just speaking from my limited experiece.) Now, thanks to b_gossweiler's answer I now know to drag from the photo, not the gray border. Cool. Problem now is that when I try to drop it on the collection IT DOESN'T GO!!!!! It's taken my two days to find this answer and in the meantime Adobe has "fixed" things so that it doesn't work. I'll acknowledge that the problem may ba a "flaky chip in the operator" but I suspect the problem is that Adobe is less than perfect when it come to the human interface part of their products. 

[Rob_Cullen]

"Here it is, 2013,"  Is this an old reply? to an 'old' thread?

Anyway- Two things must apply:

1) Drag photo/s from the thumbnail image (NOT the grey border)

2) Look for the multipage icon that appears on the faintly high-lighted Collection that allows you to Drop the photos in that Collection.

Working on a project- I prefer to make a Collection the "Target Collection" and then keyboard [B] can add  (And subtract) all selected images to the "Target Collection".

[Bob Somrak]

You are probably dragging to a "Smart Collection"