Can data dividers automove in a chart?
 

Using Excel 2007 and have a line chart showing data for 1st shift, 2nd shift,
and Total day. I have separated the data points/linesby fiscal period using
straight line dividers. I'm trying to find a way for the line dividers to
remain "attached" to the end dates and move with them as I add more data and
update the chart/graph.