You can provision a Delegate Account for both SharePoint Online and OneDrive either automatically or manually.
Automatically provisioning Delegate Accounts does the following:
Creates new service accounts based on selected Office 365 services
Configures required roles and other settings for the new service accounts
Automatically provisioning Delegate Accounts eliminates the need to:
Manually create and configure Office 365 user accounts
Manually add SharePoint Online site collections
Manually assign SharePoint Online and OneDrive site collections administrators, one by one