The Dynamics 365 for Team Members subscription is a named user subscription designed for users who are not tied to a particular function, but who require basic Dynamics 365 functionality. This license includes read access as well as some write access for select light tasks across any and all Dynamics 365 Apps. As a result, as more Dynamics 365 applications are adopted across an organization, any user previously licensed with Team Members subscription would be licensed already to access those additional applications.