I've searched about and cant seem to find it - i have seen a healing addon which Aliena uses where its a bar in the middle of the screen showing heals which are about to drop off so you can re-apply them- i have looked through curse and cant seem to see it - can anyone tell me what this is.
sorry its not grid, the addon is an animation in the middle of the screen which shows 1 bar with large icons of the heals counting down and slowly move towards the left and when they are about to finish, they "drop off" the bar

sort of like a conveyor belt