The simplest way is to add these lines to the config file:
queues
{
load0
{
passenger-queue "1"
size 48
product-kuid <kuid:-3:11060>
initial-count 0
}
}
and add the kuid above to the kuid table.
Although in typing these lines I have formatted them correctly the spacing will be lost when I click on reply so you will need to format these lines in the same way as the other containers in the config file.
You will not see any of these passengers in the carriages because you will need attachment points in the mesh for that, but you will at least see the passengers board and leave the train at stations.