There are two ways of creating a new route for a part, the first (shown here) by clicking the Create Route button in the Part section, and the other by creating the new route in the Route section and then adding the part to the route
Navigate to Data⇒Production⇒Part
Double click on the part number that requires a new route, select the Route tab and then click Create Route
The new route can now be created in the same way as detailed in the Route section
Once the route is created, click Save followed by Close
Highlight the newly created route in the list of routes, add a Material spec and Production Leadtime and then click Save followed by Clear
Click Save