Task: I want to create a goal for the workout progress with training rest time of 30 seconds and countdown time of 20 seconds in the Home workout app.
Steps:
Open the Home workout app
Click on the profile icon at the bottom right corner of the screen
Click on the Workout Settings 
Click on the Training rest drop down button
Click on the v forward icon for 5 times
Click on the v forward icon for 5 times
Click on the v forward icon for 5 times
Click on the v forward icon for 5 times
Click on the v forward icon for 5 times
Click on the SET button
Click on the Coundown Time dropdown button
Click on the v forward for 5 times
Click on the v forward for 5 times
Click on the SET button