User must specify a priority for every selected event.
User must specify a priority for every selected event: this is the conditions when must
to be started action. You may specify directly count of UPS, N-1 (number of UPS minus one) UPS
or All UPS. The event is signalling, only if event will to be detected on specified number of UPS.
ATTENTION: for special events (Redundancy overload and Redundant load normal) the Level of redundancy value, which is used for calculation of "virtual" overload status, is defined in Parallel groups page.