Task: In the mindfulness app, I would like to create a 15-minute personalized meditation for me, featuring a 2-minute bell interval.
Steps:
Click on the profile icon
Click on the 5 minutes guided option 
Click on the personalized meditations  edit icon
Swipe up and set the 15 minutes 
Swipe up and set the 15 minutes 
Swipe up and set the 15 minutes 
Swipe up and set the 15 minutes 
Swipe up and set the 15 minutes 
Swipe up and set the 15 minutes 
Swipe up and set the 15 minutes 
Swipe up and set the 2-minute bell interval
Click on Save this meditation