"Group by...." button?

I would like to add a separate button for each sorting type i want

i tried to move (with CTRL) the command found in View--->Group By---->

But i can move a command that contains all the sorting type that are available (depending by the visible columns)

But i don't need all those commands. So is it possibile to add only some of them and not all?

You can make buttons with commands like Set GROUPBY=name.

If you switch the button editor into advanced mode (if it isn't already), you can use the menus at the top of the command field to build commands and their arguments, and get the names of columns for arguments like GROUPBY.

Ok after knowing i have to add GROUPBY it's all clear,thanks