Meaning the combat ability box? Mine has it. Just hit alt / c to see it. Not much to it, its very simple. They all should have it via default anyway. Nothing really customized yet.
I use infiniti2 and I fixed the combat abilities last night. If you check in the patch fixes section, I used solaria's abilities window and edited it to work with infiniti2. Just make a file called CombatAbilityWnd.xml and paste the code from This Post into it.