Create business units
Assign the appropriate seats to one of the business units that you created or to the default business unit.
To create a business unit and assign organization seats:
From DigiCert® Trust Lifecycle Manager, go to Account > Business units and click Create.
Enter the name of the business unit, select the seat type and allocate the required seats.
Select Create.
When you have the business units you need, create a certificate profile for REST API.