The Job Scheduler 4.0 has been replaced in in 5.0 by Job Queue. You can use Job Queue to schedule to run reports, Codeunits, as adjust cost. Job Queue uses NAS to run the job. As you might know NAS can only run for one company. Thus if you have multiple companies, you need one instance of NAS per Company. The following modification allows you to run Job Queue in unlimited companies. Using two license instances of NAS. You only need to install one NAS. The code run NAS itself as second instance connecting to different companies. The only difference Setup wise is the new field "Company Name" in Job Queue Entry Code, where you can select other Companies.
You could run with one instance of NAS and a Navision client, by running CU 448 directly from a client where NAS is installed. NAS service should be stopped. NAS uses windows authentication so make sure have windows authentication.