Add customisable start point when embedding portion of Excel spreadsheet

In the Excel embed macro, there are four options:

1) Attachment.
2) Sheet name.
3) Maximum column.
4) Maximum row.

The macro then embeds a subset of the sheet, from (0,0) to (maxCol,maxRow).

Unfortunately, this makes it rather difficult to deal with content from complex spreadsheet.

It seems to me that it would not be terribly complicated to add a minimum value for column and row, and that this would substantially increase the value of this macro.