Marco,
You have the choice between changin the poll rate of 5 datapoints for your 150 devices in the DRIVER web page of each of these 750 datapoints... this is about 3000 clicks, a lot of times lost and a high risk of errors. The other solution is to use SLV Design, the commissioning/configuration tool that Streetlight.Vision has developed, to fully configure an iLON with 150 devices (configuration,commissoning, update APB, default CP values, poll rates and much more). It takes me 2 clicks (if I have the list of Neuron IDs) and few mns to create a fully commissioned iLON with "non-default" poll rate for each type of datapoint (i.e. 3 hours for one, 10 mns for another, 10 sec for a third one, etc...) with SLV DESIGN.
C.