Hi there!

To hide and show a grouped column via VBA code, you can use the following code:

1. To hide the grouped column:
   
   Formula:

   Columns("C:D").EntireColumn.Hidden = True 

2. To show the grouped column:
   
   Formula:

   Columns("C:D").EntireColumn.Hidden = False 


You can replace "C:D" with the range of your grouped column.

Hope this helps! Let me know if you need further assistance.