Can you choose which buff you want to give someone? Say you're medic and you can adrenaline boost and life buff. How do you select which buff you want to give someone? In game play videos, I see X popping out for option to supply a specific buff, but what if you want to supply a different one? What option do you have for doing so?

Also, can you supply multiple buffs to a single target? Could you, for example, life boost, adrenaline boost, and metabolism buff one person?

Dpad if on console

no ability selected buff is health
selected ability with dpad is highlighted blueish and will give selected buff

You need to interact with your teammate to give them a buff, but there is only one interact button. To control multiple buffs (which is a lot more taxing than you'd think), you need to cycle through them using your ability buttons: d-pad on Xbox; 3, 4, and 5 for PC.

Thanks, that answered my question.