The procedure to start the Threshold Monitoring is as follows:
On the global navigation tab, click [Network].
The registered FC switches are displayed on the Main pane.
On the Main pane, click the target FC switch.
On the Category pane, click [Performance].
On the Performance pane, click [Threshold Monitoring].
The current status is displayed on the Main pane.
On the Action pane, click [Start Monitoring] under the [Thresholds Setting].