The Multi Select Tool lets you select a group of stops on specific areas of the map to make bulk changes.
Use the Multi Select Tool to:
Reassign stops to a different driver
Step 1. Switch to Multi Select View
Step 2. Lasso (ie. create a circle) around the stops you'd like to edit. Double click to close your lasso
Step 3. Bulk edit your stops using the popup window in the bottom right-hand corner