Choose the arrow tool in the toolbar. Select the symbols you want to move by dragging over them with the mouse (click the left mouse button and while holding it down, drag the mouse over the symbols you want to move, drawing a box around them, and then lift up the left mouse button).
Select Move from the edit menu and then the type of symbols you want to move from the submenu that appears. Now you can drag these symbols to where you want them on the screen. (Drag the symbols by holding down the left mouse button and moving the mouse.)
When the symbols are where you want them, place them by pressing the ENTER key or by pressing the right mouse button. If you want to cancel the move operation press the ESCAPE key.