I have a spreadsheet with six rows 2 to 7 and 12 columns B to M.

Row 2 contains the date. Rows 3 to 7 contains the data.

The data from the cells is used to display a chart on the worksheet.

What I would like to do is

1) have the chart to only appear on a window when a button is pressed
2) when the window appears there will be two boxes start date and end date.

When the start and end dates are typed in I would like the chart to only
show the points between the two dates. If the start date is not typed in then
the full range should be displayed automatically.

Could any one advise how this can be made to work, a step by step approach
would be appreciated as I am not a whizz with excel.

Many thanks and any help is appreciated.