I was just able to do this with an Automated Action and a Repair Order! (I haven't tinkered with MOs yet, but I imagine it would be similar)

1) Create the action. I called mine "Create Task from RMA"

2) Leave filter and date fields empty

3) On Actions tab, I added a Server Action:

 A) Called it "Create Task"

 B) Object: Repair Order

 C) Action Type: Create Object

 D) Model: Task

 E) Destination: Task Summary

 F) Type: Formula

 G) Value: str(object.name) + " - " + str(object.product_id.name)

      This output created a task that looked like "RMA000XX - (the product that was selected to be repaired)" ex: RMA00002 - Bach Trumpet

Don't forget to save the action. I'm sure with a little more tinkering you could create other fields in the task, but I just needed a placeholder for now.

You can create Work Orders based on Work Order Operations in the Routing for a Product.

A Work Order Operation is assigned to a Work Center, which can be a Human.

You need the mrp_operations module.

Don't know how to tie into tasks, but this might be a start for you...

But how i create automatic task in audit please help me.