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