Assign a security role to a user
You can use security roles to group sets of privileges together that describe the tasks that a user can do. Microsoft Dynamics 365 includes a set of predefined security roles, each of which is a set of privileges aggregated to make security management easier. These privileges define the ability to create, read, write, delete, and share records of a specific entity type. Each privilege also defines how broadly the privilege applies: at the user level, business unit level, the entire business unit hierarchy, or across the entire organization.
For information on assigning security roles, see TechNet: Assign a security role to a user.