The Progress Application Server Agents Utilization High rule triggers an alert when the percentage of the number of agents utilized by each selected ABL application exceeds a threshold value. The default threshold value is 80% of the maximum number of agents.

The Applications List section displays all the ABL applications that are currently deployed, and you can select a desired ABL application from the list. For more information about modifying a monitoring plan and the rules associated with it, see Modify PAS for OpenEdge monitoring plans.
Note: You must select at least one ABL application from the Applications List section before saving the rule. If not, a validation message is displayed.
The percentage of the number of agents utilized by the selected ABL application is calculated using the following formula: 
Number of agents utilized = Current agents count/Maximum number of agents
For configuring the maximum number of agents, see Configure tuning parameters and process limits.