There are two user groups on Solverboard: Solvers and Professionals, with Professionals comprising of a few different role types.
The Solver role is Solverboard's ground-level user type giving "Solvers" access to Feed, Strategy and Ideaboard. They're able to post ideas and view and comment on ideas posted by other users. They can also view the organisation's strategy page, goals and subgoals.
Solvers can also be "external" and be invited to only certain Solverboard items.
All Professional users are treated the same as far as your user seats go. For example, if you add 25 Professionals to your package, you can distribute these seats however you wish amongst the roles below.
This user has ultimate control over your Solverboard, and can change platform-wide settings (such as how many stages a project has by default), invite new users, add/remove user seats and delete users.
Your Innovation Managers can manage multiple ideas, tests, options & projects, and own "entities" within them, for example, project risks. They have access to most areas of the platform, with the exception of settings.
Once an idea has graduated to a project, it might be suitable to assign a Project Manager (with the Innovation Manager retaining ownership, if you wish). Project Managers can create and edit anything they are assigned to, and anything within those entities.
A user with this role can be invited into specific ideas, tests, options and projects and be assigned tasks or things from your project registers like risks or opportunities, for example.
An Executive user is just like an External Professional and can be invited to certain projects, but for read-only access. You might wish to invite in your CEO for an overview of your analytics within Dashboard, for instance.