Detailed Drawings > Annotating the Drawing > Cleaning Up Dimension and Detail Display > Working with Leader Lines > To Attach a Leader to a New Object
  
To Attach a Leader to a New Object
1. Select a leader to modify.
2. Right-click and click Edit Attachment.
3. Select a new entity at the point to attach the leader. Click the middle mouse button to finish.
 
* You can also use Edit Attachment command to move created (driven) dimensions, as well as notes and other detailing items.