Select your app.
Click "Pricing and Availability" in the menu on the left.

Click "Add Pricing".

Select the price for your app. Choose 0.00 if you want to make your app free. Afterwards, click "Next" twice.

Confirm the prices.

Below the prices, click "Set Up Availability".

Select "All Countries or Regions" unless you want to restrict where your app should be available. In that case, select "Specific Countries or Regions". Afterwards, click "Next".

If you chose "Specific Countries or Regions" select the countries in the next step.
Click "Confirm".

