With the normal tool , select the objects to move from/to background, and then on the Tools menu, point to Arrange, and then do one of the following:
•To put selected objects above all other objects, click Bring to Front or press CTRL+F.
•To put selected objects below all other objects, click Send to Back or press CTRL+B.
•To put selected objects for one step forward, click Bring Forward.
•To put selected objects for one step backward, click Send Backward.
Alternatively, click icons on the Drawing toolbar: