Select steps in the Step Editor
You can use any of the usual selection techniques in the Step Editor, with the following variations.
Select individual steps
Hold Shift, then click the steps in a lane.
Select several contiguous steps
Hold Shift, then drag to select the steps in a lane.
Take care to avoid clicking any steps. If you click or drag with the unmodified Pointer tool, the selected event values are changed, so make sure you hold down Shift.
Select all steps on a lane
Click the lane name.
Select all steps on multiple lanes
Shift-click the lane names.