Joining two nets with different names requires:

https://easyeda.com/forum/topic/Net-tie-a-copper-only-component-with-2-pads-to-split-nets-without-DRC-errors-and-multiple-netname-warnings-b6a099bf01bb4055b821ab398ee37b60



Trying to join a track starting at a pad on one component pin to another starting at a pad on a different component pin is an issue or net naming and is easily fixed by giving the two pads the same net name.

It sounds like you are laying out a PCB without first creating a schematic.

Please read and follow the links in:

https://easyeda.com/forum/topic/How_does_the_Connect_Pad_to_Pad_tool_work_-JgQO0Ay7H

"...an issue of net naming..."

Thanks andyfierman, "net naming", or rather "renaming", in my case, has pointed me to a good workable solution.  I realise now that the problem is that I need to copy chunks of wiring to use on different nets.  That's actually a very simple task: (1) select all the wires, (2) change the net name in the object properties tool window.  Once that's done it's possible to join the copied chunk of wiring to the other parts of that net.

@Billygoat,

You're welcome. I wasn't 100% sure that I'd understood exactly what you wanted to do but as long as it helped you get there then that's good.