...
The Resources / Process Classes view displays information about the Agent Cluster that a Job or Job Chain is to be executed on (if any) and the maximum number of processes that a task may use as well as the location - i.e. the Path - of the Process Class object in the JobScheduler Master's live folder.
The Number of Processes column shows in near real-time the current number of processes being executed for each Process Class.
Note that the Resources / Process Classes view includes those Process Classes that do not include a Host parameter for specifying an Agent Cluster.
The screenshot above shows one Process Class - agent_cluster. This view is purely informational (i.e. non-interactive) and the Number of Processes column is updated shows the current number of processes being executed for each Process Class in near real-time.
In addition, when a process class is being executed, detailed information is dynamically added to the table - the Agent, Job, Process and Task IDs and Running Since columns shown in the screenshot.
Further information
See the Process Classes article for more detailed information about Process Classes.
...