A Copper Area assigned to a net will automatically create a clearance between itself and anything on a different net. In other words, it will auto-generate holes in itself to avoid anything it is not connected to. The clearance for a Copper Area can be set up in the Copper Area Manager. [https://docs.easyeda.com/en/PCB/Copper-Pour/index.html](https://docs.easyeda.com/en/PCB/Copper-Pour/index.html)<br> <br> Or you can generate a Rectangle and then place one or more Solid Regions set to No Solid to insert copper-free area(s). [https://docs.easyeda.com/en/PCB/Solid-Region/index.html](https://docs.easyeda.com/en/PCB/Solid-Region/index.html)

@andyfierman that's brilliant! I hadn't played with the Copper Area feature yet. That works perfectly for my needs.