iOS cluster control is a technique for centrally managing multiple iPhones from one computer, without jailbreaking, without plugins and without dev boards.

This one answers: How Do You Start With iOS Automation Scripts.

Many people write complex scripts before the phone is even connected to cluster software,and fail. Recommended order:

  1. Connect the phone (USB or WiFi)
  2. Record or write a simple flow and run it successfully on one device
  3. Add wait times and handle failures
  4. After it is stable, send to a group of phones

Roles of cluster control vs scripts

Scripts run the workflow; cluster control provides screen view, groups, and batch send. See Script authoring and delivery.