Hi,
SBA4B standalone product is not supported,
we are working currently on a fully managed SBA4B standalone solution, which provides policy configuration through the endpoint management server and logs monitoring.
the solution is currently is available through with Early Availability process, while GA is scheduled for end of Q1/20.
the Chromebook license is relevant only for SBA for Education version which is as a different set of capabilities then the SBA4B product.
if you need more information, feel free to contact me directly at zivsa@checkpoint.com
Thanks,
Ziv Sahar