Hi,

1. The onhand hand quantity shows the stock in that location and in its child locations, ie when you map the parent location as WHStock to your other location, you can see the total onhand quantity of that product in both the locations.

Note : Make sure you dont have any previously developed reports for viewing the stock of that other location specifically, because once you map the parent location, all the stock of that product will be showing in WHstock

Hope it helps,
Thanks!