Hey, it's been a long time I know, and probably the tip I have for you you already know it, but if not then enjoy.
So you've been dragging those regions around to arrange your song haven't you?
Nice, but what happens when there are too many regions and you want to put them at a point beyond your arrange window?
Enter the Pickup Clock command.
In your arrangement window, place the cursor where you want your regions to be and then press the semicolon key ( ; ), the result is that the regions will follow the cursor position!
Here's a little video of it, I'm not using the semicolon key though, I'm using the button.