Quick Targets is a simple addon for world of warcraft which allows the player to rapidly apply raid target icons to their mouseover targets using a round robin keybind.
Once in the game, open your settings and keybinds. On the left select "Other". Allocate a key for: "Round Robin", "Reset", and "Clear" functions.
Press your round robin keybind to set the current icon onto the mouseover target. The AddOn will reset back to the first icon when you leave combat, ensuring it is ready for the next pull. If you agro the next group, you will need to press your reset keybind as you will not leave combat!