Use the service admin role to manage your tenant
To help you administer Dynamics 365 for Customer Engagement, you can assign users to manage Dynamics 365 for Customer Engagement at the tenant level without having to assign the more powerful Office 365 global admin privileges.
Users with the Dynamics 365 for Customer Engagement service admin role can:
Sign in to and manage multiple Dynamics 365 for Customer Engagement instances. If an instance uses a security group, a service administrator would need to be added to the security group in order to manage that instance.
Perform admin functions in Dynamics 365 for Customer Engagement because they have the Dynamics 365 for Customer Engagement system admin role. The service admin must be assigned a Dynamics 365 for Customer Engagement license.
A Dynamics 365 for Customer Engagement service admin cannot do functions restricted to the Office 365 global admin such as manage user accounts, manage subscriptions, access settings for Office 365 apps like Exchange or SharePoint.
The Dynamics 365 for Customer Engagement service admin can manage instances of version 8.1 (Dynamics CRM Online 2016 Update 1) or later.
Here's a matrix of what's available with the various Office 365 roles.
|Office 365 role / feature||Backup & restore||Sandbox copy||Configure new instances||Manage an instance||Add Customer Engagement licenses||Access support requests||Access Service health||Access Message center|
|Office 365 global admin||Yes||Yes||Yes||Yes||Yes||Yes||Yes||Yes|
|Office 365 service admin||No||No||No||No||No||Yes||Yes||Yes|
|Office 365 user||No||No||No||No||No||No||No||No|
|Dynamics 365 service admin||Yes||Yes||Yes||Yes||No||Yes||Yes||Yes|
For information on email approval, see Approve email.