Yes there is: Open the Coin Database Editor, navigate to the coin types you wish to add grades for. For example Country>Denomination>Denomination Sub-Type. See the "Grades" Tab, open this and select the grades you wish to appear. Open the "Coins" Tab, Select the coin Year/Variety you wish to add values for and select the Edit button. This opens the Coin Properties, click the "Values" Tab and enter the values you want. When Done, click OK and OK. The grades and values should now appear for your coin.
