WPF Datagrid with ComboBox Template

WPF Datagrid with ComboBox Template

I have the below Person Model as an example class, with an ObservableCollection<string> of occupations.  How would I bind a ComboBox so that the ItemSource is linked to the Occupations property, and the selected item is linked to the Occupation property?  This is usually pretty easy with the standard data grid, but is causing me issues with the Xceed version and I haven't been able to figure it out through testing these past few days.

It may be worth noting that my Datagrid is bound to the ObservableCollection<PersonModel> People in the view model.
  2. public class PersonModel : INotifyPropertyChanged
  3.     {
  4.         #region <--Constructor and Destructor...-->
  5.         public PersonModel()
  6.         {
  7.             Occupations.Add("Engineer");
  8.             Occupations.Add("Farmer");
  9.             Occupations.Add("Politician");
  10.         }

  12.         ~PersonModel() { } //Currently Does Nothing
  13.         #endregion

  15.         #region <--Fields...-->
  16.         private string firstName;
  17.         private string lastName;
  18.         private string occupation;
  19.         private static ObservableCollection<string> occupations = new ObservableCollection<string>() { "Engineer", "Farmer", "Politician", "Lawyer", "Coder", "Teacher" };
  20.         #endregion

  22.         #region <--Property Changed Event Handlers...-->
  23.         public event PropertyChangedEventHandler PropertyChanged;

  25.         // This method is called by the Set accessor of each property.
  26.         // The CallerMemberName attribute that is applied to the optional propertyName
  27.         // parameter causes the property name of the caller to be substituted as an argument.
  28.         private void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
  29.         {
  30.             if (PropertyChanged != null)
  31.             {
  32.                 PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
  33.             }
  34.         }
  35.         #endregion

  37.         #region <--Properties...-->

  39.         public ObservableCollection<string> Occupations
  40.         { 
  41.             get => occupations;
  42.             set => occupations = value;
  43.         }

  45.         public string Occupation
  46.         {
  47.             get { return occupation; }
  48.             set
  49.             {
  50.                 occupation = value;
  51.                 NotifyPropertyChanged(nameof(Occupation));
  52.             }
  53.         }

  55.         public string FullName
  56.         {
  57.             get => LastName + ", " + FirstName;
  58.         }

  60.         public string LastName
  61.         {
  62.             get { return lastName; }
  63.             set
  64.             {
  65.                 lastName = value;
  66.                 NotifyPropertyChanged(nameof(LastName));
  67.             }
  68.         }

  70.         public string FirstName
  71.         {
  72.             get { return firstName; }
  73.             set
  74.             {
  75.                 firstName = value;
  76.                 NotifyPropertyChanged(nameof(FirstName));
  77.             }
  78.         }
  79.         #endregion

  81.         #region <--Methods...-->

  83.         #endregion

  85.     }