Feature request: Set growable property to occupied cell

Currently the only way to make a cell of a GridBagSizer growable is to click on the GrigBagSizer on the tree, and then go to Properties->Grid and find that cell in a dialog that appears when you push the ... button. I suggest a feature be added that allows the user to right click on a cell and enable making it growable. This would so much more direct. 

Is it possible to select multiple widgets and apply the same property to them all? I had a column of buttons that I wanted to all have a left border of 5. Is there an easier way to do this than selecting each one and applying the property change separately? 

Thank you.