You can equip 1-3 Raid Enhancements to our character in the loadout screen, they can be found under your hardware. The Enhancements you have equipped can also be seen at the bottom right hand of your screen while you are raiding.

The Raid Enhancements you have selected will be consumed when you exit the safe Zone in your next Raid so make sure to check what Enhancements you have equipped when you enter a Raid.