Swipe left on the "Accuracy" view to access the control menu.
Make sure the "Sequence" control is selected. If not, tap the control and choose "Sequence".
Tap the play icon button to start the sequence and confirm that you want to stop the ongoing free measurement.
The sequence will begin with the first action's position and duration.
Tap the "eyes" button in the status bar to view the current status of the sequence.