Well, the configuration files in the respective directory conf/ are pretty self-explanatory. There is a file for the logging (logback.xml), the quartz scheduler (quartz-scheduler.properties) and for the actual software (sensor-samplor.properties). You won't need to do anything in the scheduler file, but the other two you can edit:

Declare your logging directory in the file and fileNameRollover directives. If you're leaving it on the default /var/log/sensor-samplor you need to start the SensorSamplor as root.

Here you can configure how the sensor node should behave. For starters certainly the sensors and receivers are to be chosen.