You'll either have to use two child devices, each with the standard capability and the attribute it requires, or use one or two custom attributes on the parent device (if one, you could use the standard attribute for the other if you want).
A single device can only have one of the same attributes, this being one of the purpose child devices serve.
just wanting to make sure you have the right driver for the right device. That said you better laundry manager available in HPM. Easy setup. Will work fine with that.
Personally I got rid of my zooz HEM's. Didn't like their limitations. I prefer Iotawatt. 100% local, works with hubitat and you can output to grafana/influxdb
That App and the one @rlithgow1 mentioned (my Better Laundry Monitor -- BLM) are both just recipients of data found in the selected device, and its Driver. Which HEMv1 driver are you using?
I use BLM to monitor my kids TV power use and shut it down 'after hours' on school nights. But that's because the Device/Driver that the TV is plugged into is selectable in BLM. In my case, I probably have to change the L of BLM to mean "Life"
Here you go. This driver was originally written by Mike Maxwell for the SmartThings platform, then modified by me for the Hubitat platform many years ago. I haven't used it for a long time, but I did use it specifically for monitoring washer and dryer, treating each CT clamp individually.
Mike's one that Larry has on the HPM does something quite similar to this. Unfortunately, there is no way to monitor power/energy with it currently.
The energy meter is commented out on this, like Mike's was.
This isn't about alerts, got that handled. It's being able to monitor watts on Grafana which (as far as I understand) is going to require child drivers which I have no clue how to write or where to start.