Step 1: Click on the apple icon
Step 2: Click on the "Nap" icon
Step 3: Select the kids whom you want to do the nap activity and click "Next"
Step 4: If the kid has just started to sleep click on "Start Nap" or if the kid has just woke up click on "End nap" and click on "Add Activity" to proceed.
You have successfully added the nap activity for the select student.