Yes, you have two slots so you can just add it You'll need a screw if it didn't come with one. You'll also probably want to put a thermal pad to match the one on the original SSD. The metal cover is the heat sink for the SSD's once you open it up and look you see what you need to do.
G752VY-DH72 Win 10 Pro
512 GB M.2 Samsung 960 Pro
1 TB Samsung 850 pro 2.5 format
980m GTX 4 GB
32GB DDR 4 Standard RAM
Z97 PRO WiFi I7 4790K
Windows 10 Pro
Z97 -A
Windows 10 Pro