Printing hundreds of 5R photos in LR
I am new to printing in LR. Im using LR 12.1. I need to print 900 5R photos, and I have pre-cut 5R photos loaded in my epson printer.
My problem is that I am making a custom package with multiple single 5R's:

and I need to drag each of the 900 photos on each box... Is there away I can just put them all at once?
PS: also, any tips on printing the same color as you have on your screen?
