Installing LockDown Browser to a Chromebook is easy.
The following Knowledgebase article provides additional information about the beta release of LockDown Browser for Chromebook, including feature limitations and known issues: https://support.respondus.com/support/index.php?/Knowledgebase/Article/View/586. This article will be updated periodically during the beta.
If you have technical questions, or would like to report bugs/issues, please open a support ticket at https://support.respondus.com. Be sure to indicate you are using LockDown Browser for Chromebook.