In IBM Rational Team Concert, it is helpful at times to create a work item with default values in its attributes. Default values can be set for any attribute type and can be set in "Attribute Customization" section of the Project Area Editor. For more information on setting default values check this article. Setting default values for Text fields and Enumerations is straight forward as described in the article in above link.
1. Create a work item and populate the Approval section with required approval entries (which needs to be appeared by default). Save this work item.
2. Now from the top work item menu, select “Create Work Item Template”
3. Enter appropriate template name and fill in the details.
A new work item template is created. Now to create a new work item with pre-populated approval entries, select New->“Work Item from Template" instead of New -> "Work Item..." in the context menu of Work Item Folder and select the appropriate template.
The work item templates are stored for a particular project area and can be viewed in Project Configuration -> Configuration Data -> Work Items -> Templates.