How to create popup notification over dashboard in grafana running host

Hi,
I want to show my system overload notification to user.
I am running grafana in Ubuntu 16.04(IP:10.114.16.32)
I have data traffic dashboard.
I want to show if datatraffic above 100MB, then push a popup window over the running dashboard.
How can i do it.

I seen webhook,slash, but I need to install in the machine and configure the slash url and etc.

I just need custom notification in thegrafana running host , don’t want to send alert outside.

How can I do it or grafana have this capability.

Thanks,
SJK

There is nothing built-in for showing popup windows. People usually use the singlestat panel and change the color to red when it is over a threshold. You can also customize the text.