It is possible to set Custom Poller Thresholds and use them in alerts or for objects on Network Atlas maps. However, for the Universal Poller Gauges that can be included on the web pages these need to have their thresholds set independently. It would be much better if the Custom Poller Thresholds could also be applied to the Universal Poller Gauges. As discussed in support Case: 797780 - Custom Poller Thresholds.