See below for granting roles to an existing PKIaaS user.

To granting PKIaaS roles to an existing user

1. Log into Entrust Certificate Services as a Super Admin with the User Management role.
2. Navigate to Administration > User Management. 
   
3. In the left sidebar, select Super Admin Users or Requester Users types described in User types with PKIaaS roles.
   
4. In the content pane, click on a user name to display the user details.
   
5. Under Roles, select the PKIaaS Management and Public Trust roles already described in Creating a user with PKIaaS roles.