I want to be able to tell my healers in party chat to heal me to full when I'm Walking Dead status. Actually, I want one button for when I first activate Living Dead, and I want another button for when Walking Dead has started.

Problem is, I'm on PS4 and used up all my regular buttons. I have the extra R2 L2 crossbar stuff too. There a way to use my keyboard for when I have extra vertical crossbars setup in my HUD?