Modifying Multileader style in AutoCAD

To achieve this use one of the methods below: 
Method 1: 

1. On the AutoCAD Ribbon go to Annotate > Leaders >
2. Click on the little arrow at the bottom to open the Multileader Style manager
3. Choose the style on your left
4. Click on "Modify" on the right-side of the dialog box 

Method 2: 

1. Use the MLEADERSTYLE (Command) in AutoCAD 
2. Choose the style on your left
3. Click on "Modify" on the right-side of the dialog box 

The dialog boxes below should appear when following the steps above.