How to activate the alloy equipment 5 phantom pain parasite suit skills

How does the "Metal Gear 5: Phantom Pain" parasite suit activate the skill? Many players don't know much about this, but don't be impatient. The following system is a series of tips and tricks for you to share with you. I hope everyone can enjoy it.
The development of the corresponding drugs and clothing in conjunction with the three abilities, corresponding to the development, the use of the attack equipment, there are specific skills button. Need to develop three properties of the potion can be the special effects of the parasite warfare, respectively, the fog (Save Miller and hunnybee mission to capture the soldiers), invisible (code talker rescue the old man task to catch the female sniper sniper), hardening (On the task after the old man came out of the crash, he grabbed the armor and squadron). After the completion of the game, you can develop these three properties of the potion.