Goal: As I am looking for door stoppers, look for the door stoppers in the Stops category in the Amazon app.
Steps:
action: action_type: navigate_back
step_instruction: Get back to the previous page of the app
action: action_type: click
step_instruction: Click on the filter button at the top right of the screen
action: action_type: click
step_instruction: Go to the Categories filter
action: action_type: click
step_instruction: Select the Stops category filters 
action: action_type: click
step_instruction: Click on the Show results button