Slowing Necro style

[Ramelorm]

Freelance members,
My computer crashed and doing hot keys all over again to get my Necro back to like I had him

How do I set up slow hotkey

So far I have

Line 1: /cast ## ( combust bones )
Line 2; /alt act;751 (sent of Terri's)

Is this all I need

List your hotkeys