Disclaimer
I'm new to Workflows, so I need the "for Dummies" version.
Scenario
I have created a workflow that triggers whenever a user creates a new Item in a List. The workflow looks up the user's manager, then creates an Approval Task ("Manager Approval") on the current Item.
If the manager approves the Item, the manager should enter (somewhere, somehow) the names of the upper level managers (ULMs) that the Task should be routed to for the next Assignment Stage. The ULMs then approve in parallel, and if they ALL approve, the Task is finally done and Approved. Rejection from anyone stops the task and marks the item "denied".
Problem
I get all of this except how to let the manager enter the names of the ULMs on Approval.
I tried adding a parallel approval step for the ULMs, but how do I get those values from the manager?