Making custom templates for Flip Boom All Star

Does anyone know how to make custom templates in the .tbt format for use in Flip Boom All Star? I teach animation to grade schoolers and would like to make custom templates for them to use. I know how to install the free ones provided by Toon Boom, but I would like to make my own to install for their use. Suggestions? Is it so easy I am being naive? Thanks.

Menu-Library-Create Collection

Draw something, select it and click the
“export template” button or
menu-File-Export Temlate.