OpManager allows you to delete a device, when you do not want to manage it any more.
To delete a device, follow the steps given below:
Click the device icon in the map.
Click Delete under Actions.
You can also delete multiple devices at a time using Quick Configuration wizard. To do so, follow the steps given below:
In the Admin tab, under Tools, click Quick Configuration wizard.
Select Delete Devices and click Next.
Select the devices to be deleted from the list and click Finish.