Search the library for a suitably sized through hole PCB footprint (a multilayer pad). Note the name. Or create your own PCB footprint using a single through hole (multilayer) pad. Save it with a unique name. Place a schematic symbol for a single pin header in your schematic. Select it and change the Package attribute to the name of the PCB footprint. You will have to search for it in the upper right of the Footprint Manager window then select it and check the pin assignment (pin and pad numbers must be the same but they could be names or characters instead of numbers). Press Update then close the Footprint Manager. Save the schematic then do : Tools > Update PCB...

Recommend you read: [https://easyeda\.com/andyfierman/Welcome\_to\_EasyEDA\-31e1288f882e49e582699b8eb7fe9b1f](https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f)

See also: [https://easyeda.com/forum/topic/GND-and-VCC-don-t-appear-as-pad-connections-1c9b3f9a2165453eaff909463280e3df](https://easyeda.com/forum/topic/GND-and-VCC-don-t-appear-as-pad-connections-1c9b3f9a2165453eaff909463280e3df)