The component exposes only one method that calculates the parity bit based on the property you set at design time (even or odd).
Right-click on the Methods in the Component editor and select Add Method option from the context menu to open the Methods editor.
You can configure the methods of the component. The created methods are listed on the left side, and properties of the selected method are displayed on the right side. To view parameters of a Method; click Parameters tab of the Component editor.