Slack Integration: when a new item is created in this group, notify someone

We work with a Content Marketing board that serves as our master planning for the calendar year. There is also a requests section that has a form tied to it for cross-departmental and inter-departmental requests for content. I want my content marketer to only receive notifications via Slack when a new request lands via the form in the Requests group. To my knowledge this integration doesn’t exist and I wasn’t able to figure out how to make it myself.

The pain point is that my content marketer currently gets notifications for all items added to the board.