To add leaders, click Modify | Text Notes tabFormat panel, and click the desired tool:
(Add Left Side Straight Leader)
(Add Right Side Straight Leader)
(Add Left Side Arc Leader)
(Add Right Side Arc Leader)
Click as many times as desired to place leaders.
Tip: To convert a text note's leader to an arc leader, select the text note, and on the Properties palette, select Arc Leaders.
To remove the leader line that you added most recently, click Modify | Text Notes tabFormat panel (Remove Last Leader). Click as many times as desired. As you click, leader lines are removed in the order they were added.