how to put someone in a group photo in photoshop

I will help you to put someone in a group photo in PHOTOSHOP CC . If you are new here consider subscribing to my channel. I post videos every 3 days.
Image Credit from pexels.com
follow me on Instagram and Facebook @ Kitiwment Studios
my personal Facebook and Instagram @ davidanane_vfx
background music from stockmusic.com

[@tommaso7455]

not working