There are two license types that you can set in Newforma Project Center.  Professional, which is full featured and is the default setting.  There is also an Express license that can be set.  Express users can view all Project Center information. 

Express users can create, modify, and delete items in the following areas:  Newforma Viewer, markups; project email; project files; My Project Center activity center; project timeline; search; project team; Project Center administration; and the Info Exchange website.

An example use case for an Express license would be a temporary Intern or part-time employee that needs to work in Newforma as part of the team and yet you want to limit the events that this specific user can create.