You should also review the following five pages of this LibGuide as preparation to publish your dissertation. It's a very good idea to read through this series of FAQ's from ProQuest about the submissions process also before you begin. You should set aside quiet time, perhaps 30 minutes, to work your way through this process. It's not difficult, but there are many steps to take.
Go to the ProQuest ETD Administrator service website for Piedmont University.