To my knowledge, there is no facility in MMM to fade out the entire arrangement as a whole.  The information provided by limeelsa (which is too small and blurry to be of much use) describes how to do a simple fade-out on a single object (as well as a cross-fade).  I would assume you already know how to so this.  If not, you need to make that clear.

The simplest way to do a global fade-out on the entire arrangement is to export (mix down) the entire arrangement to a single audio file (.wav format is preferable).  Then, it can be imported into the original arrangement (setting that track to play "solo") and the fade-out applied, using the fade-out handle, to that single audio object.  It can then be exported to the desired final format.

If the "linear" fade-out provided by the fade-out handle is not what's desired, you can apply a fade-out of any desired taper by using the effects automation.

To my knowledge, there is no facility in MMM to fade out the entire arrangement as a whole.  The information provided by limeelsa (which is too small and blurry to be of much use) describes how to do a simple fade-out on a single object (as well as a cross-fade).  I would assume you already know how to so this.  If not, you need to make that clear.

The simplest way to do a global fade-out on the entire arrangement is to export (mix down) the entire arrangement to a single audio file (.wav format is preferable).  Then, it can be imported into the original arrangement (setting that track to play "solo") and the fade-out applied, using the fade-out handle, to that single audio object.  It can then be exported to the desired final format.

If the "linear" fade-out provided by the fade-out handle is not what's desired, you can apply a fade-out of any desired taper by using the effects automation.

Had this in mind, but each step in a creation gives an individual experience. Would have been nice to have global arrangement volume control.

Super thx for reply