1. Set the Left Locator to where you want the inserted area to start.
2. Set the Right Locator to where you want the inserted area to end.
All Parts to the right of the Left Locator are moved to the Right Locator.
Parts that have their start point before the Left Locator and their end point after it, are lengthened the selected amount of bars, but of course contain no Events in their lengthened sections.
All Parts that started after the Left
Locator Position are moved the
selected amount of bars.