Hello Thomas,
first you have to give each loco an epoch at the right most culumn. Then you enter all of your routes into the ZFA (Zugfahrten-Automatik). At each line in the automatic you set the matrix to the desired epoch and set the epoch additionally in the options.
Then you start the automatic and before setting the signal to green you click on the arrow at the right. There you select your epoch and set the signal to green.