Q:

EaselJS way to change default pivot?

Pivot of stage is set to Left Top corner of canvas but I want Left Bottom corner.
So then up is +y and right is +x
Is this possible?

A:

It is not advisable to transform the stage -- there are some issues with how mouse coordinates are transformed. 

Put your contents in a Container instead
Set the coordinates of the container to the stage width/height
Move your contents into negative x/y

If you absolutely must transform your stage, you can set the regX and regY to the stage width/height. It will move the contents, so you will have to counter-position the contents so they display properly.
Hope that helps!

