With the default Warcraft macro system...

If you have two or more sequences which are exactly the same, but on different keybinds.
Pressing one will advance them both.

I'm not sure if it would advance two (or five sequences) where the spells are the same, but the targets are different. Either way, your macro's are created automatically by a wizard, which is a strong feature.

I seem to remember (from your video) the ability to "on the fly" move a Druid or Shaman or Priest toon from the DPS group to the Heal group, so they start to cast their predefined heals instead of nukes. That's a nice feature, basically the same as having a separate dps button for each toon and a separate heal button for each toon, and the ability for your fingers to simultaneously reach each combination possible.