We will soon be releasing the integration of File Request with Box Relay. This enables teams to design and deploy workflows that automatically handoff incoming content submissions to downstream actions such as document review and approval.
Through a File Request trigger, a workflow automatically kicks off when content is submitted. Additionally, conditions defined on submitted metadata can be used to perform specific actions, including assigning tasks to individuals and teams.
For more details, check out this broader announcement blog which included this capability.
Please refer to this article for background and information on the current File Request functionality.