(Make sure you run this wizard on the destination domain controller logged in as the administrator of the source domain)
Select the Source and the Destination Domain and the Domain Controller
Select the computer account that you want to migrate
Select an OU in the Destination Domain where you want to store this Service Account after Migration
Translate Objects: Local groups / User rights
Security Translation Options: Add
Conflict Management: Do not migrate source object if a conflict is detected in the target domain ADMT
Run Pre-Check
Run Pre-Check and Agent Operation
Once the migration starts, the client machine should reboot automatically. This will initiate the change in its domain membership