XXIII. Assigning User Roles
You can manage built-in or custom role assignment policies for your organization. End-user management roles allow users to perform specific self-management tasks. The combination of all roles assigned to a role assignment policy defines everything that users can configure and manage.
i. Creating a Role Assignment Policy
This policy grants end users permissions to set their Outlook Web App options and perform other self-administration tasks.
1. Go to Admin page, -> [Exchange Online] -> [Manage] -> [Roles & Auditing] -> [User Roles] tab -> Click on [New]