After Creating a sub accounts you can see the list of your sub-accounts in this page.
Click on this icon you can assign your prices to selected sub-account.
Note: If you don't have sub-accounts "Click Here" to get help how to create sub-accounts

After click this icon you will get popup of the prices. Here you can assign prices to your sub-account with each country.
Note: If Assign price is '0' then system will automatically use the default prices which is provided by noonSMS.
