Add a New Layout
By default Presentation Manager comes with two layouts, live and
build. It is possible to setup as many layout buttons as you wish.
To add a new layout button:
1. Click the "Edit Properties" button and select "Toolbar".

2. Use the Layout Configuration Page to add your button.

To add a third layout button use the up and down arrows to set the Button number to 3.
Use the Layout ellipsis button
(...) to select a layout to associate with your new button. If
you do not have a layout already created for you new button, set it to
one of the default layouts and then edit that
layout.
Set the name of the new layout button in the Caption box.
You can change the look of your new layout button by clicking the Button ellipsis button. You
may want to compare the looks of the default layout buttons if you want
your button to appear similar.