Save the template you want as the default template.
Close any open chart.
Delete all files in your "Data On Demand" and "BM Data" folders.
Re-open your charts. They should look like what you want.
Organise them (size, position, timeframe, etc).
Click on File-> New -> Layout.
Add all charts.
Give a name to this layout.
And the next time you want to open this layout, click on File -> Open, select layouts (* .mwl) in "Files of type" and select your layout !
I hope I could help !