![enter image description here][1] You can uncheck the bottom layer, and skip the GND net to router. Hope it is OK [1]: /editor/20171207/5a29415f5291d.png

This works: 1. Create a PCB package as an `All Layers` Pad (Do *not* use the Via tool in the PCB Lib Editor) but with the dimensions of your preferred via size, (I have already created one called **XVIA1**); 2. create a schematic symbol called for a dummy single pin through hole header (I have already created one called **XVIA1**); 3. assign the package to the symbol (I have already done this for **XVIA1**); 4. draw your schematic; 5. **In your case:** place a GND symbol onto the ground net; 6. place as many instances of **XVIA1** onto whichever nets you want in your schematic (in your case place them on GND ends of your components); 7. complete and check your schematic (refer to https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f); 8. `Convert Project to PCB...`; 9. place the components; 10. place the one or more `xvias` where you want them; 11. set the Autorouter to `Top Layer` only (untick all other layers); 12. run the Autorouter; 13. Place a Copper Area on the Bottom layer and assign it to the `GND` net; 14. complete and check your PCB (refer to https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f).