Hello,
The Role Center is the user's entry point and home page for Dynamics 365. You can develop several different Role Centers, where each Role Center is customized to the profile of the intended users. For example, you could have Role Centers that target the different levels within an organization, such business owners, department leads, and information workers.
Role Centers are based on a user-centric design model. You should design a Role Center to give users quick access to the information that is most important to them in their daily work - displaying information that is pertinent to their role in the company and enabling them to easily navigate to relevant pages for viewing data and performing tasks.
So you do not design a role center per company, but per user (role).
Thanks.
