To configure the threshold value and apply the template
- Go to Settings → Configuration → Device Templates.
- You can find the ESX Server and VMware Virtual Machine templates for the hosts and VMs respectively. Click on the required template.

- Click on the monitor name to enable or disable the threshold, and to modify Warning Threshold, Error Threshold and Rearm Values.

- Click OK.
- Click on Save to save the device template. Click on Save & Associate to save the device template and apply the changes to the devices associated to the template.
- Click Associate for the devices to inherit the configurations in the template. Or, click Associate & Overwrite for the devices to remove the old and add the new configurations in the template.