Right-click the layout tab of the layout you want to
reposition. Click Move or Copy.
In the Move or Copy dialog box, select the layout tab that
should be placed immediately after the moved or copied layout tab.
If you want to move the layout tab to the end of the list of layout
tabs, select Move to End.
Click OK.
Alternatively, you can click and drag the layout tab of the
layout you want to reposition and place the layout at the desired
position.