In an attempt to create a switching scenario that does not dictate every move that must be made to complete it, I decided to create one that uses only a series of Marshall instructions. In order to eliminate the need to create instructions to define a path to throw dispatcher controlled switches, I chose an area of a route that includes only manual switches - in this case Kalispel on Marias Pass. Here is what I have found so far:
1. All cars specified in a single Marshall instruction must be on the specified siding, coupled together, and not coupled to any rolling stock not specified by the instruction.
2. The Marshall instructions do not have to be completed in any particular order for successful completion of the scenario, but you will not get confirmation of successful completion of each step with a check mark unless they are done in order. Previously completed but un-checkmarked Marshall instructions will however automatically become checkmarked when all instructions ahead of them are completed.
3. If you make an error in one of the instructions i.e. wrong car, wrong siding, or coupled setout cars to non specified cars, you can go back at any time, correct the situation, and successfully complete the scenario.
Although this approach demands that you search for the cars specified, it the closest I have found to my idea of what shuffling cars should be like!


