SC Layout Designer — unlimited customizable layouts
Positioning the box is designed to be as *Percent* of screen size (whatever the DAR is).
Precision alignments can be achieved by copying and pasting the XY values from the corners between the multiple effects used.
An option to Show Point % will display these values on the screen with the TopLeft as the left set and the BottomRight as the right set.
Keep up to date with Sight-Creations on Twitter.
A good place to see all of my effects as well as several tutorials and other demonstrations in use is on my YouTube channel.