How would I get the red arrow (spawn path) to point in a different direction? The documents didn't help much. Thanks in advance.

Select the node, hold x, hold the mouse button that corresponds to the axis you want to rotate on (left button for x axis, right for y axis, middle for z axis), then move the mouse around until the node is pointing in the direction you want it to be. Also, it's been my experience that the green arrow controls which way units face when they spawn.

That was easy. Thanks a lot.