The tool used for revising multiple labels (text attached to a leader) is the Revise Leader Attributes tool found in the Advanced toolbox.
Clicking on this tool opens the Revise Leader Modifier that has the same three tabs as the Insert Leader Modifier:
1. Attributes.
2. Text.
3. Edit.
The Edit tab
The Edit tab allows you to type new text that will overwrite existing text on selected labels. Existing text on your drawing will not appear in this panel. You can use command alias’ to insert text here.
The Attributes tab
The Attributes tab includes settings associated with the leader line. Here you can change leader tail length, elbows, constraints, arrow style and size.
The Text tab
The Text tab allows you to change the font style and size.