Method 1

From Manage->Manage students/classes, click on the "Search Students" button to go to the student search facility.

 

From here, search for the student to reset, tick their name and reset their password via the button at the top right of the page.

 

Method 2

Alternatively, go to Manage students classes.

 

Edit student details for the class where the student belongs.

 

Reset the student's password.