Thanks again, Adrian. Another question...
When I created the drum map I found that there are more drum sounds than are displayed in the Addictive Drums window when I double-click on Addictive Drums in the browser pane, Synth tab. So I added all the drum sounds in the Step Sequence view. Is there any way I can force all the available sounds to be displayed in the Addictive Drums window so that I can adjust their parameters too? For example, I found that MIDI note 89 is a cymbal, but in the Addictive Drums window, after I click the Edit button, along the bottom where the volume sliders are displayed, there are no sliders displayed for cymbals. When I click the Kit button, the cymbals are displayed.
UPDATE - I think I found the solution. In the Kit view of the AD2 window, in the upper right corner for the cymbal, there is an "E" which I think stands for "edit". When I click the "E" it appears that I do get an edit window for the cymbal as clicking displays the same view as if I clicked on the "Edit" button. I'll have to look in the manual to see if my observation is documented. Unfortunately, not all parameters are enabled. The Volume Envelope pane is not enabled.
UPDATE 2 - I found THAT solution. One just has to click on the upper left icon for the parameter in the Edit view. That icon apparently toggles the parameter on and off. I love Sonar.