Do the following steps to override the default descriptive feature selections:
On the Tools menu, click Descriptive Features.
The Descriptive Features dialog box opens.
Select the desired phone in the Phone List pane (right pane).
The descriptive features are displayed in the Features pane (left pane).
The features assigned to 
 the phone are selected with a check mark ().
For 
	 a descriptive feature, click the check box to select () or clear (
) it.
Repeat this step for each descriptive feature.
Repeat steps 1 and 2 for other phones, if desired.
If you need to return all the selections for the currently selected phone to their original settings, click Reset.
Click OK.
The default descriptive features of labial-velars include 
 bilabial and velar. Phonology Assistant by default places them in the 
 bilabial column of the consonant chart. To create a labial-velar column 
 for these sounds to appear in, you clear () bilabial 
 and velar, and then select (
) labial-velar.