Use the Reward feature to interact with the student in your class.
Reward a single student
There're two ways to reward students.
Find the student you want to reward, and click here.
Operating in Roster is a better choice if you can't see all the students in the seating area.
Open Roster, and find the student you want to reward. Click the Reward icon.
Reward all students
Open Control, and click 「Reward」 to reward all students in your class.
You can also operate in Roster. Just open Roster and click 「Reward All」.