How do I rename "Groupbox" to a meaning name like the window name

I created a new Windows for a New Object. I put all the necessary labels and then draw a GroupBox. The Box has a default name which is GroupBox and I need to rename it with the name the same as the Window I just created.

I see that all the other Windows that were created 3 or 4 years ago by the Consultant who first setup our LANDesk, have Group Boxes too and they are all named appropriately. May I please ask if you could kindly show me how to rename the GroupBox. Thank you so very much. Ernie.