Introduction
Default roles can span several modules. It is sometimes useful to have a role with more restricted access (to one module only, for example).
Adding new roles
To restrict access to one or more modules, it's best to duplicate a generic role to maintain a clear role structure.
For example, to give users access only to reading content on Sendingly, simply duplicate the generic Reader role, then uncheck the boxes on the other modules.
It is advisable to avoid creating custom roles for each user and to choose explicit names (for example: Sendingly - Reader).
Conclusion
To create a custom role, please see the article How to create a bespoke role