TTMSFMGGrid Column Width

How can I make a specific column to take up the rest of the space e.g. equivalent to TAlignLayout.Client?

Sorry, this feature is currently unfortunately not yet built-in.
It is a good suggestion we'll consider for a future update.

Hello,
I don't know if this feature is now built-in : I could not find TMSFMX method but I am a beginner with TMS Firemonkey Pack. 
Instead of it, I use my code I made myself  :
procedure TForm1.TMSgridApplyStyleLookup(Sender: TObject);
begin
    With TTMSFMXGrid(Sender) do AutoSizeRows();
    ColMaxSize(TTMSFMXGrid(Sender), 1);
end;
with
procedure TForm1.ColMaxSize(aTMSFMXGrid : TTMSFMXGrid; aCol : integer);

var
  iCol, iRow : integer;
  tWidth, tHeight : single;
  bVScrollVisible : Boolean;
begin
  bVScrollVisible := False;
  with aTMSFMXGrid do
    begin
      tHeight := 0;
      if RowCount > 1 then
        for iRow :=1 to RowCount -1 do
          begin
            tHeight := tHeight + RowHeights[iRow];
            if tHeight > Height then
              begin
                bVScrollVisible := True;
                Break;
              end;
          end;


      tWidth := Width;
      if bVScrollVisible then
        tWidth := tWidth -(width - GetCellWrapper.Width);
      for iCol := 0 to ColumnCount -1 do
        if iCol <> aCol then
          if not IsHiddenColumn(iCol) then tWidth := tWidth - ColumnWidths[iCol];
      if tWidth > 0 then
        ColumnWidths[aCol] := tWidth;
      Resize;
    end;
end;
Regards.
Optimized version :
procedure TForm1.ColMaxSize(aTMSFMXGrid : TTMSFMXGrid; aCol : integer);
var
  iCol: integer;
  tWidth: Single;
begin
  with aTMSFMXGrid do
    begin
      if (aCol > ColumnCount -1)
      or (IsHiddenColumn(aCol)) then Exit;


      tWidth := Width - (Width - GetCellWrapper.Width);


      if ColumnCount - HiddenColumnCount > 0 then
        begin
          for iCol := 0 to ColumnCount -1 do
            if iCol <> aCol then
              if not IsHiddenColumn(iCol) then
                tWidth := tWidth - ColumnWidths[iCol];
          if tWidth > 0 then
            begin
              ColumnWidths[aCol] := tWidth;
              Resize;
            end;
        end;
    end;
end;
Hi,

Thank you for your feedback,
we will investigate here if we can implement such a functionality in the TTMSFMXGrid.

Kind Regards, 
Pieter