Goal: I'm performing an abdominal workout and crunches for 10 minutes, thus I'd like to set a timer for 10 minutes. 
Steps:
action: action_type: click
step_instruction: click on the Timer tab at the bottom of the screen
action: action_type: click
step_instruction: select the 10 minutes
action: action_type: click
step_instruction: select the 10 minutes
action: action_type: click
step_instruction: select the 10 minutes
action: action_type: click
step_instruction: click on the start button to start timer