Create Process Model using the Rename Users Smart Service

Hi everyone, I was tasked with creating a process model to rename users using the rename users smart service. I only have the Start Node, the Rename Users node and End Node. I have multiple questions that I need answered that can hopefully help me get started as I am unable to find the guidance I need in documentation and other threads. Here are my questions:

  1. What other nodes do I need/should I have?
  2. When configuring the Rename Users Node what do I put for "Value" and "Save Into" for Inputs?
  3. For the Rename Users Node how should I configure the Outputs?

I would also appreciate any other reference material you all might think is helpful. This is all I've found so far, and it wasn't enough to help me get started: Rename Users Smart Service - Appian 24.3 

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