In the Infinity Portal go to > Identity & Access.

In the Auto Match Roles for Services section, select the checkbox Enable auto match role for.

To enable Auto-Match for all of your Infinity Portal services, select All Services.

Or,

To enable Auto-Match for specific service(s), select Specific Services and in the Select Service tab, select which service(s) to enable Auto-Match.

The Infinity Portal automatically saves your settings.