Hi,
If you would follow the instructions from the documentation you will see that the document can be created in Kentico
CMS via WLW in such a way, that it will stay in the first workflow step (Edit) when created and then someone can approve the document, but this then has nothing to do with WLW since you need to configure your workflow in Kentico CMS to behave according your needs. I mean that you need to configure the roles and users in such a way that one some user from some role will be able to approve the document.
Best regards,
Miroslav Remias.