This is a PIN level change. Meaning that the change effects the PIN not the person. If a PIN is a multi-incumbent PIN, then this change will affect everyone assigned to the PIN.
This is a person level change. This change only effects the person you are changing the pay rate for, not the PIN. If a PIN is a multi-incumbent PIN, then this change will only affect the selected individual not everyone assigned to the PIN.
You can make one or both of these changes by emailing email@example.com the changes needed.