Multiple arm measurement routines have commands that control multiple arms. Each machine executes these commands separately, keeping both arms moving.
The Insert | Move | Move Sync menu option allows you to insert a MOVE/SYNC command into the Edit window.
Using this command on dual-arm machines allows you to synchronize the motion of the arms. Whichever arm reaches the MOVE/SYNC command in the measurement routine first will stop and wait until the other arm also arrives before they proceed together with the rest of the measurement routine.