Show or hide some property at runtime.

        public RadForm1()
        {
            InitializeComponent();
            
            this.radPropertyGrid1.ItemFormatting += radPropertyGrid1_ItemFormatting;

            Person employee1 = new Person();
            employee1.Name = new Name("Ana", "Brown");
            employee1.Age = 28;
            employee1.Profession = new Profession() { Company = "Progress", Title = Title.Developer, Address = "Sofia" };

            Person employee2 = new Person();
            employee2.Name = new Name("Ana", "Brown");
            employee2.Age = 28;
            employee2.Profession = new Profession() { Company = "Progress", Title = Title.Developer, Address = "Sofia" };

            Person person = new Person();
            person.Name = new Name("John", "Smith");
            person.Age = 36;
            person.Profession = new Profession() { Company = "Progress", Title = Title.Manager, Address = "Sofia", Subordinate = new List<Person> { employee1, employee2 } };

            this.radPropertyGrid1.SelectedObject = person;
        }

        private void radPropertyGrid1_ItemFormatting(object sender, PropertyGridItemFormattingEventArgs e)
        {
            if (e.Item.Label == "Name" || e.Item.Label == "Profession")
            {
                ((PropertyGridItemElement)e.VisualElement).ValueElement.Text = "";
            }
        }

        public class Person
        {
            [CategoryAttribute("Personal Info.")]
            [TypeConverter(typeof(ExpandableObjectConverter))]
            public Name Name { get; set; }

            [CategoryAttribute("Personal Info.")]
            public int Age { get; set; }

            [CategoryAttribute("Profession Info.")]
            [TypeConverter(typeof(ExpandableObjectConverter))]
            public Profession Profession { get; set; }
        }

        public class Name
        {
            public string First { get; set; }

            public string Last { get; set; }

            public Name(string first, string last)
            {
                this.First = first;
                this.Last = last;
            }
        }

        public enum Title
        {
            Manager,
            Developer
        }

        public class Profession
        {
            private Title title_;

            public string Company { get; set; }

            public string Address { get; set; }

            public Title Title
            {
                get
                {
                    return title_;
                }
                set
                {
                    title_ = value;
                    if (title_ == Title.Manager)
                    {
                        // hide property subordinates
                    }
                    else if (title_ == Title.Developer)
                    {
                        // show property subordinates
                    }
                }
            }

            public List<Person> Subordinate { get; set; }
        }

        private void radPropertyGrid1_Edited(object sender, PropertyGridItemEditedEventArgs e)
        {
            if (e.Item.Label=="Title")
            {
                PropertyGridItem item = e.Item as PropertyGridItem;
                if ((Title)item.Value == Title.Developer)
                {
                    item.Parent.GridItems["Subordinate"].Visible = false;

                }
                else
                {
                    item.Parent.GridItems["Subordinate"].Visible = true;
                }
            }
        }