Extending Tempo Selections
You can extend Tempo selections to the next or the previous tempo event.
To extend a tempo selection:
1. With the Selector tool, select a range of tempo events.
2. Do one of the following:

Press Shift+Tab to extend the selection to the next tempo event.

Press Shift+Option+Tab (Mac) or Shift+Control+Tab (Windows) to extend the selection to the previous tempo event.