psh who needs reflections? lol

And yes, tripod is a must. Keep it there, have the person move around, then in PS open all the pictures, copy and paste the others on top of the last picture in the group. Then, on the last layer (the last picture you copy and pasted) use the eraser tool and erase everything except for the person currently showing. This in turn will give you 2 people. THEN, select the next layer down in the layers window, once you have done that, click the eyeball and turn off the previous layer you just worked on, this will in turn only show one person again, then you do the same and erase all but the person in the current pic. Repeat this and once you do the layers, you are done, then just click the "background" layer and all the people with show up...