Add chart as desktop widget?

Running plasma 6.0.4:

Operating System: Arch Linux
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.1.0
Qt Version: 6.7.0
Kernel Version: 6.8.9-arch1-2 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 5800X3D 8-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 7700 XT
Manufacturer: Micro-Star International Co., Ltd.
Product Name: MS-7C35
System Version: 2.0

In the System Monitor, if I right-click on any chart, this option is shown: “Add Chart as Desktop Widget”. I would like to play with this, but can’t figure out what it does.

I don’t see any new widget on my desktop, and I can’t find any new widget in the plasma “Add widgets” dialog. Can anyone tell me what this is supposed to do?