We currently support Contact Level sponsors, not list-specific sponsors for Salesforce on the Connector.

Vuture has the ability to add a Primary Sponsor to the List Member object, for when they are used in an email send. The sponsor will then appear as the From Name (when sending an email) if selected on the Send Email screen, when you send from a Salesforce list.

You will need to set this up in your CRM first, as custom fields, ensuring that the Primary Sponsor Email Address is one of the fields. Primary Sponsor Name will typically be the other field.  Vuture will then map these for you, in the CRM Metadata Manager.