According to John:
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"For beginners, I figure a loco and five cars are about right.
We start with two inbound cars and the loco at any of several positions;
the other three cars are placed at the corresponding destination tabs.
Take two outbound markers and place them on two of the three cars at the industries: operator's choice.
Now the two cars with the outbound markers are to be brought out to where the inbound cars are,
in the same position - either behind or in front of the loco.
The two inbound cars will be taken in and left at the corresponding industry location by type of car shown on the tab.
The fifth car will stay where it is.
You can use five different car types, or four types, with two of one type.
When a new game starts there is no need to put cars back to their original positions.
Just take the markers off the two outbound cars and place them - operator's choice -
on two of the three cars at industries; these will be the new out-bound cars.
As you increase your skill you can add more cars.
I still keep it two outbound and two inbound,
but I add cars to the trackage even though they will end up at the places where they started.
Their addition increases the problem and time by about the square of the number of cars.
Nine cars are the maximum found possible on the single Timesaver layout,
but eight are actually more interesting and more difficult."
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How this is translated to the virtual Timesaver:

I'm still having some problems to translate John's explanation to a perfect virtual rendition.
That's why I've decided to build a h0 scale Timesaver to find out how it really works...

Will be continued.