Now click any where or press Esc button on key board to deselect the line.
In catia v5 double click on a command will allow you to use randomly this command.
Ctrl button will allow you to select more then one component. Press the Ctrl key until the last selection.
The result will be like bellow the image. Now it is fully constrain. Green color of the profile in catia is the symbol of fully constrain.
Now remember step 12. See the top view and enter the values .you have to enter the X,Y values only. Now come out from the sketcher work branch.
Change your work branch to Generative shape design.