Wanna splitalittle? Check out this video to learn how!
Pro tip: you can split multiple regions at once by selecting all of the regions you want to split before performing the split command (Cmd/Ctrl+E). You select multiple regions by pressing and holding the Shift-key while clicking the regions you want to add to your selection. You can also click an empty space and drag to make a selection.
If you select a region by mistake, just click it again to deselect it!