Quick Raid Button, How should I set up the macro?

[Brodek]

I dont know what is wrong with me, I keep reading the different stuff, but it's not getting through, I want to make the quick buttons to do my rez (Elixir of Resuscitation) and make it say in raid chat INC rez to %T stop other rez.

But I think i got how to put the elixir part but dont understand the how to set up assist button

Can someone plz help this computer noob