public AddRemoveGUI(PrimaryEnrollee primary)
 {
     InitializeComponent();
     PrimEnr = primary;
     foreach (DependentEnrollee DepEnr in primary.dependents)
     {
         comboBox1.Items.Add(DepEnr.getFullname());
     }
 }
        //adding dependent to an Enrollee
        public string addDependent(String fullname, String relationship, PrimaryEnrollee P)
        {
            //creating dependent enrollee
            DependentEnrollee d = new DependentEnrollee(fullname, relationship);

            //linking dependent enrollee to their primary
            P.dependents.Add(d);
            return("Successfully added");
        }
 //removing dependent from Enrollee
 public string removeDependent(int index, PrimaryEnrollee P)
 {
     //removing dependent from Primary Enrollee
     P.dependents.RemoveAt(index);
     return("Successfully Removed");
 }