The scheduler does not work with edit_row/grid_edit instead it’s using tasks. You can set up the task as the starting point of the process flow. 

The use of a task as starting point is not wanted. The only starting point of a process flow for the scheduler is a task? 

Correct me if I am wrong but in the Universal GUI the scheduler is not using tasks (https://docs.thinkwisesoftware.com/docs/sf/screen_types#available-features). 

So, I think it is not possible to use tasks to start a process flow.

You are correct, I'm sorry for the miscommunication I did not notice this was involving the Universal GUI. I will ask around how this works for universal.

While the process flow is started after the Edit Row action by Indicium, Universal currently does not follow up on any UI action that might be the result of the process flow being started after a drag-drop in the scheduler.

I’ve taken the liberty to create a ticket for this, you can track it via ticket number 2919S.