When you choose your crafting log, and select the craft you want to perform, you should see the ingredients on the right. If you look closely you will see an up and down arrow for your HQ ingredients, and it should currently be at zero. You can replace any number of NQ items by upping the number of HQ items per ingredient.
Also, when you run out of NQ ingredients, it will automatically default to HQ I believe.
____________________________
http://na.finalfantasyxiv.com/lodestone/character/729735/