StarTeam allows you to create custom fields to meet the needs of a workflow process. One enumerated property field controls the workflow process for the item type. The selected field usually requires some customization, even when it is an existing application property field.
You can customize the property fields in a server configuration for an item type by using StarTeam and, to some degree, by using StarTeam Workflow Designer. See the customization chapter in StarTeam Help or the Administering and Using StarTeam PDF to learn more about creating custom fields.