To Change an Element's Level with the Change Element Attributes Tool

Select the element whose level you want to change.
Select the Change Element Attributes tool ( Drawing > Home > Modify > Change Attributes split button).
Click the Level check box and choose the level where the element is to be relocated.
Enter a data point to accept.
The element is relocated to the selected level.

Note: You can also change the level of an element from the Level option menu on the General tab of the Properties dialog.