at least local administrator privileges are the minimal necessary permissions for this task
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Step-by-Step
Open your "Windows Settings"
Navigate to "System"
go to "About"
search the page for "Advanced system settings" or "Rename this PC (advanced)" beneath the Related settings section - both open the same control panel !!
open the "Advanced system setting" (again both will open the same dialog)
click the "Change" button
Leave the "Computer name" as is for now and select "Workgroup"
Most commonly windows uses "WORKGROUP" as value for "Workgroup"