Saved enabled

First, let me appreciate Myron for his contributions on his explicit illustration on how to use interactive Blend tool.

However, he did not explain that of interactive Extrude tool.

Having said that, I use macro to save a letter headed and saved into macro enabled. To my surprise the next day, it would not be available for me to use. Please what am I doing wrongly. The essence is to avoid using repeatitive letter headed. Can someone please explain the rudimentary steps in doing this without disappearing.