Random Number Generator
Some of the different operation methods require a "random number generator". There are a number of ways to do that - Spreadsheet formula, sheets of paper pulled from a hat, using dice, using a deck of cards, etc.
Personally, I have created a card for each of my rolling stock. Then when I need to do something random, I use the cards. If I need to pick 10 random pieces of rolling stock, I spread them all out face down, and pick out 10 cards. If I need to assign my 10 cars to 3 random locations, I pick out the ten cards needs, shuffle them up, and then "deal" the out to three stacks.
The benefit to me is that:
In N-Scale, the road number/reporting marks can be pretty small, so the photo reference is a big help.
The same cards (should) be able to be used in a "Car Cards & Waybills" operation.
As seen on "DIY and Digital Railroad" https://www.youtube.com/watch?v=5MVCA0kAgKQ. I suggest you watch the video for full details, but my summary is:
Check how many industries you have on the layout (include the yard if you have one), and how many cars can be held at each industry. This will give you a MAXIMUM number of rolling stock you can use.
Pick out the rolling stock you want to use, and list them on a sheet of paper/spreadsheet/etc.
Assign each industry a number starting at 1.
Go down your list of rolling stock, and using a random number generator set to number of industries, assign each car a starting location. (If you exceed the industry limit, then just generate another random number. )
Now repeat step 4 to get a finishing location for each piece of rolling stock.
Car Cards & Waybills
My working/planning version for Car Cards & Waybills (CC&WB) uses my "Play Cards" version of Car Cards, and then draws inspiration from a setup I found on a web forum.
I use my "Play Card" style car cards. My template makes it so I get nine to a standard 8.5x11 sheet of paper. The card ends up being about 2.5 wide, and 3.25 high. (roughly the same as a standard "baseball card" size. )
I cut up a number of "Trading Card Sheets" (like for keeping baseball cards in a 3-ring binder) I had laying around. For the ones I had, each sheet gave me 6 pockets. The sheet has 9 pockets, but the center row got sacrificed when cutting. If you happen to find sheets that have a wider/more solid weld then the ones I was using, you might be able to cut down the middle of the weld and use all 9 pockets.
then the waybill is a 3x5 index card cut to 2.5x3 . This allows the waybill to stick out beyond the car card. I will likely come up with a printed version later, but this is still at ' proof of concept' stage.
Now I can slide the car card into the pocket, with the waybill behind. The car card sits down inside the edge of the pocket, nicly protected, and does not accidently get pulled out when you grab the waybill.
Might need to figure out a "when empty return to" option (IDK yet-- I don't plan on having that big of a layout so maybe that just becomes "Waybill 4"
All other CC&WB setup/rules/features should be easy enough to employ (bad orders, leave in place orders, etc).
Without the waybills in the back, I can still use these same car cards when ever I need some Random Number Generator
Presentation I found about CC&WB -- https://www.tulsanmra.org/resources/DRS_CardCards.pdf