Invite VPP purchasers to Apple Business Essentials
If you have Volume Purchase Program (VPP) purchasers that weren’t included when you upgraded to Apple Business Essentials, you can invite them to your organization.
Invite Volume Purchase Program (VPP) Purchasers
In Apple Business Essentials, sign in with a user that has the role of Administrator or Content Manager.
Select your name at the bottom of the sidebar, select Preferences
, then select Organization Settings 
.Select Invite VPP Program Facilitator at the bottom of the page.
Enter the Apple Account of the VPP Program Facilitator account you want to invite to Apple Business Essentials, then select Invite.
The user receives an email with a link to join your organization. After they sign in to Apple Business Essentials, they’re asked to upgrade their account. After they upgrade, they can start using Apple Business Essentials, and you’ll see the account as a Content Manager in your primary location.