I saw several posts outlining how to enable the outline function (Data
.... Group and Outline ... Group). Very helpful. Thanks.

Is there some way also to enable custom views which hide certain
*sheets* and hide *rows/columns*?

I have the following code that runs when the workbook is opened:
--------------------------------
Private Sub Workbook_Open()
ActiveWorkbook.CustomViews("Navigation").Show
MsgBox "Please select the appropriate view on the Navigation tab:
summaries on left, working views on right.", vbOKOnly, "[snip name]"
End Sub
--------------------------------
So, the user interface depends on the use of radio buttons, which in
turn call out custom views as such (for example):
--------------------------------
Private Sub OptionButton7_Click()
ActiveWorkbook.CustomViews("2004 Q1 Full View").Show
End Sub
--------------------------------

So, if I want both the outline function to work and the custom views
to work in a *protected and shared* worksheet, is there any way to do
that?

Will the ranges I have defined for users to be able to edit still work
if protection is invoked from VBA upon workbook open, or will I have
to explicitly define editable ranges in the VBA code?

Thanks, ... and pardon the long list of questions.
Michael Lambert.