Self Service Procurement - Dynamic Field (Supplier)

Summary:

In Self Service Procurement (Redwood), is the Supplier field dynamic, or is there a way to configure it so that it is? We would like the field to display all suppliers whose full name contains a specific “text” string, rather than limiting results to names that begin with that text.

Is there a way to enable or configure this type of “contains” search functionality for the Supplier field?