Workbench is not available in this version of OCTO Ops. The Coming soon badge on this page refers to the Workbench feature itself, not just to this guide — there is no Workbench list, form, or profile you can open in the application yet.
Workbench still appears in the left navigation under Production, but selecting it, or any Workbench link, opens a page-not-found error. If you're looking to work with a production batch today, see Orders and Jobs instead.