There is not a way within Huntress to send notifications to different email addresses based on the organization.
That said, several of our partners accomplish this with email rules. The email rule forwards the incident report based on the organization name in the subject line.
For more information on parsing Huntress Incidents check out this Doc: https://huntress.zendesk.com/hc/en-us/articles/4404012540947
If alerting and remediation must be set up for an organization that Organization must be bumped up to a Huntress Account Contract (that can live as a "reseller contract" under the parent account). More information here: Reselling Huntress (for resellers)