Does a full Finance license holder perform operations Activity user activities

Hi. this is a question for CSP.

A user has a full Finance license for D365 F&O (Base license). They also have to perform a small number of SCM activities. These SCM activities can be performed also be an activity user.

1. Does a Full Finance license automatically cover all activity users across the F&O solution?

2. In the above case the fact that the user is doing some SCM activities which can be covered also by a activity operations license, require this user to have an attach SCM or an additional Operations activity license?

Thank you

Regards

Akshay