I applied the Transition - Movement preset Stretch - Horizontal which works great other than the fact that by default, it flys in from the left and I want to change it to the right.

The issue seems to be that there is an expression for Transform - Position - Expression: Position:

if (effect("Stretch Master Control (edge)")("...the other side") == true)
{[thisLayer.width, thisLayer.height/2]}
else
{[0, thisLayer.height/2]}

What can I put in there to tell it to come from the other side of the screen?

thank you.

Hi Dustin. If you look at the Effects Control Panel, at the top there is a Stretch Master Control. Tick the box that says "...the other side".