When you create a route, it is a draft and is not immediately available on cases. To be available on cases, it needs to be validated, by a specific group of users called "routeManagers". Once the route is validated, it cannot be edited anymore.
How to make the route available to route managers
Routes are created in personal workspaces. This means that, unless you shared your personal workspaces with other users, only you can access its content by default. To enable route managers to validate a route, you need to give them access rights on the route. They need to have at least "Write" permission on the route to be able to validate it.
How to inform route managers that they need to approve a route
There is no automatic alert that informs the members of the group "routeManagers" that they have a new route to validate. You need to let them know by external means, by sending an email for instance. When you notify them, don't forget to send them the URL of the route to approve. As the route is located in your personal workspace, they won't be able to browse the application and find it easily.
How to validate a route
Only the members of the "routeManagers" group can approve routes and make them available to the Nuxeo CMF users.