Arrow animation and arc shapes

I am new to storyline, so this may be a simple item.  Please see slide, I am having 2 issues, I can't figure out.

1. This is a process and I would like the green line to grow from one waypoint  to the next point.  I do have grow animation on the straight lines, and had to use fade on the curves.  Any suggestions?

2.  I need instructions suggestions how to fix the arcs so they are one and not a combo of a straight line and arc.

slide attached.  Please guide this newbie