[wxSmith] How to place/order component in a wxGridSizer

[Didier69]

I'm playing with wxSmith which is great ! I would like to use a wxGridSizer 2x2. I defined it in the properties "Cols x rows". Now I try to move my buttons and labels in one of the 4 cells, but nothing is moving.

How can I place my components in the cell I want ?

My questions are quite simple I think, but I can't find documentation for wxSmith, or perharps it's somewhere I didn't find ?

Regards.