Individual Devices, sub devices

Hi. On the energy dashboard is it possible to have sub devices?

For example, I have a sensor for hot water cylinder heating kWh. But I also have sensors for individual cylinders.

I would like bar graphs in ‘individual devices’ for both total HWC heating, as well as the individual devices. But obviously I don’t want the consumption counted twice (ie confusing ‘untracked consumption’).

Basically, I want to display energy consumption for a device but exclude it from tracked consumption. Is that possible?