Display Publish button for publishing portal

If you want to display the publish button without going through the Parallel Approval Workflow. Here is how:

1. Go to Modify Pages Library Settings.


2. Click Workflow settings


3. Click Parallel Approval.


4. Uncheck 'Start this workflow to approve publishing a major version of an item.'


5. Now that you are able to publish the page content without the approval workflow.


Reference:
The Publish button is not displayed when you create a site that is based on the Publishing Portal site template in SharePoint Server 2007