Cannot add grey hidden columns (MacOS desktop app)


I just started using GanttProject desktop app for Mac and I find it really easy and intuitive to use. I just can’t add grey hidden columns into my Gantt chart.

I read on previous threads that I’m supposed to click the button “show selection” but I cannot find it anywhere (see the screenshot below).

Is there something I’m missing?

Thanks a lot for your kind support.


The user interface of this dialog was changed in GP 3.2. TL;DW: click the eye icon.

Thanks Dmitry, very kind and helpful :slight_smile: