When moving workstations with QMM RUM (Resource Updating Manager) it needs certain combination of permissions. In most cases single account is specified under "Tools|Options|Service Account" that encompasses all the required permissions:
1. Admin access to the workstation.
2. Rights on the source AD to Modify/Delete computer accounts.
3. Rights on the target AD to join new computers to the domain.
In some scenarios where no trust exists single account cannot be utilized. How RUM can be configured to rely on more than single account?
In most cases "Specify Credentials" option is utilized. It can be specified for each workstation or server being migrated.
Important: this information was applicable only for the older versions of QMM.