GoGuardian Teacher is a program that can be used to manage Chromebooks in the classroom.
The GoGuardian company has provided a number of tutorial videos that make it easy to get started and to master the use of GoGuardian Teacher. Access those tutorial videos is through a Google Classroom class created for Olympia teachers to use as a launching pad. Use the Class code gded5n to join the class.
A printable GoGuardian Teacher pdf document with How-To instructions is available.
And check out these "Quicksheets" for a quick reference on a variety of features within GoGuardian Teacher: