SharePoint Publishing Approval Workflow

If you would like to use Out of the box SharePoint Publishing Approval workflow for approving publishing the pages before to publish it for Read access users, Start this workflow to approve publishing a major version of an item option doesn't enabled by default. See below pic.

To enable this, you have to enable below two settings.

1. Require content approval for submitted items?

    YES

2. Create a version each time you edit a file in this document library?

   Create major and minor (draft) versions 

Note : Enabling Create major versions do not work though.

Now,  Start this workflow to approve publishing a major version of an item option will available.

Happy Workflows :)