About Plug-ins
A plug-in is a widget that you can configure to work with the components of an application (such as entities and queries), and then use it in an application. You can thus add additional functionality to Operations Hub.
Using Operations Hub, you can embed plug-ins in an application. You can use plug-ins stored on your local machine or imported from a different site.
To create a custom plug-in, refer to Custom Plug-in Structure
Pump Temperature Plug-in
Suppose there is a plug-in that shows the trend graph of the highest temperature recorded in a pump.
Suppose you want to create an application that monitors the energy efficiency of the pump. In addition to the other parameters that you want to display in the application, you can use the plug-in to show the highest temperature recorded in the pump (instead of creating a trend graph from scratch).