The essence of the SimaPro multi-user is to enable collaboration where users can work in a shared database at the same time. Moreover, you can define various user types and different access levels per user. You can check out this
article for a further overview of user management in SimaPro multi-user.
In the PDF below, you can find elaborate information on the basics of SimaPro multi-user, such as its infrastructure and building blocks, installation and update tips, and how to create and manage users.