Integrate a UIPath process workflow with Tallyfy steps

UIPath lets people build automated flows, and record them.

Tallyfy deals with human tasks and approvals i.e. the parts that only humans can do.

How would I make a step in Tallyfy launch a UIPath Robot/flow within a Tallyfy step with the Tallyfy API?

The idea is that Tallyfy becomes one place to track a whole process for a human - with both human-only steps and UIPath automated steps in one place.