Allow columns to collapse but not hide

It would be helpful to be able to collapse columns in much the same way that one can "Group" rows or columns in Excel.

For instance, if I want to collapse some columns because, for instance, they are not often used (but I don't want to hide them so I can retain their placement) or I don't want someone looking at them during a webex or something, I would have an option.

As I see it now, one has to create a layout for each of these cases, and I am thinking that this is not all that efficient.