Here is what you need to do to setup your Shipping Details and main location. 

1. From your AppScenic Account, click on Settings and then on Shipping Settings.

Or you can also click on Shipping Details from the Quick Start of your AppScenic Account.

2. Here, on top of the Shipping Settings page, you have the field Main Location where you need to add the main country you will ship to or, in other words, where most of your customers are located.

3. You can also choose to select the box "Do you also ship to other countries (internationally)" if you intend to ship internationally.

Keep in mind that if you don't tick this option you'll be able to import only products that ship to your main location.

4. Make your choice and click on SAVE.

And that's how you set the Main Location in your Shipping Settings.