Message content is templated and can contain OPEL levels, time declared etc when a new level is reached.
Message recipients belong to configurable groups (e.g. Silver command).
Messages can be sent using specific templates, in response to level changes in any of the metrics.
The metric levels are calculated using a variety of methods; ascending thresholds, descending thresholds or direct level entry. The calculation for categories and the organisation is by weighted thresholds which allows the calculations to be fine-tuned to prioritise metrics within a category or categories within the organisation.