Goal: Start tracking walking activity.
Steps:
action: action_type: navigate_back
step_instruction: Go back to the previous screen
action: action_type: navigate_back
step_instruction: Go back to the previous screen
action: action_type: navigate_back
step_instruction: Go back to the previous screen
action: action_type: click
step_instruction: Click on the Home icon at the bottom left corner
action: action_type: click
step_instruction: Click on Add(+) icon 
action: action_type: click
step_instruction: Click on Track workout
action: action_type: click
step_instruction: Click on Start walking
action: action_type: wait
step_instruction: Click on Start walking