Where did Workgroup go?

[50gumbys]

I used to use the Workgroup feature when saving more than one workbook.
This way all nominated workbooks would be grouped together when saving and would open together.
However, I can't find Workgroup anymore.

Is it still lurking in Excel?
If so, how do I get to it?

Thank you so much for your long memories!!

 

[mole999]

which version did you get to ?