You can import an existing specification using the Customization Specification Manager, and use the specification to customize the guest operating system of a virtual machine.
Before you begin, you must have at least one customization specification saved as an xml file located on a file system accessible from the vSphere Client.
- From the vSphere Client Home page, select Customization Specifications Manager.
- Click Import.
- From the Open dialog, browse to the .xml to import and click Open.
The imported specification is added to the list of customization specifications.