This is the page where you tell NISCA what hosts it should monitor.

If you want to add a new host to be monitored, enter its hostname or IP address in the first field and hit enter (or click on "Add Host").

If you want to delete a host (that is, stop monitoring it), click on the button in the "Del" column next to the host to delete.

To change the communities/interfaces monitored on a host, click on the button in the "IFs" column next to the host you want to change.

You may or may not have to click the "Go" button at the bottom of the page to submit the form.