1. Open the Add Application form via one of two ways:
The first way
Hover your cursor over the Dockbar and click the Add Application icon.
The second way
Right-click any area inside the Desktop background and select Add Application from the drop-down menu.
The Add Application form will appear.
2. Select a category on the left pane. The applications of this category will be shown on the right pane.
3. Click 
corresponding to your desired application. Your selected application is then automatically added to the Dockbar.