You can use the Properties palette to change label properties. 
To change label properties
- Select a label in a drawing. If the label is part of a group, the entire group is selected. 
 
- Right-click, and click  or Properties. 
 
- In the Properties palette, change the desired properties. 
 
 
To change the properties of a single label within a group
- Press Ctrl+click to select the label. 
 
- Right-click and select  or Properties. 
 
- In the Properties palette, change the desired properties. 
 
 
Tutorial Exercise: Working with Label Properties