Transport tab :
Set up trade routes between cities to automatically send resources.
Each city must have its own route. You can make multiple routes for each city, but there is no global ‘all cities’ route.
The “From City” is pretty self-explanatory. It is the city you are moving resources from. So it could be a satellite city that you are sweeping resources from, or even your main city if you want to schedule a regular bank drop or transport to a training city.
The “To City”, again is pretty self-explanatory. For most people it should be your store city or your main or a bank. It can also be a training city if you you are moving resources from your store city to train with.
If you have a small number of wagons in each city, leave the default 60 minutes setting in the time between check for transport. If you have a reasonable number of wagons in each city (and you should) change the time to check transport to 120 or 180 minutes depending on how fast you accumulate resources. Again, each city has to have its own route. So if you are sweeping your satellite cities for ore, you can set that route up by itself, then set another route up for food, etc. You can also use this to make sure that your training cities have enough resources to always train the max.