You need the Tenant Administrator role to perform these tasks.
User Management
User management
Add, remove, and manage users in your ABBYY Vantage tenant, and control what they can do by assigning Role-based access control (RBAC) roles.
As a Tenant Administrator, you decide who has access to your Vantage tenant and what they’re allowed to do once they’re in. User management covers two tasks: maintaining the list of users in the tenant and assigning the roles that grant their permissions.
Get started with either of these tasks: