Below is a link to a user defined feature (UDF) addin. The addin gives you the ability to insert G-code and comments as a Feature in the opertions list. This is useful if you would like to insert an M0 somewhere between features.
http://mail.featurecam.com/udf/macros/U ... ration.bas
The page that describes the use of this is:
http://mail.featurecam.com/udf/