The Workflow app is a feature in the Widen Collective that must be enabled for you to access. Contact your customer success manager to enable Workflow. Project creators, proof providers, and reviewers must have Collective accounts to use Workflow.
After Workflow is enabled, access it from the apps menu in the Collective.
If you can’t access Workflow, it may not be enabled on your Collective site or you may not have permission to access the app. Contact your Collective admin for assistance.