Trend w/ High Possible & Low Possible

[jdharley]

Sorry I don't know the correct terminology for this.

I am plotting a trend line of work done vs work remaining. Naturally, in any given period the team will do better or worse vs the trend.

What I'd like to show on my chart is the values, the trend, the high potential trend and the low potential trend (like hurricane tracks with the variance on either side).

Also, I'd like my trend line to run down to y==0 rather than stopping mid page as the auto trend line does..

Can you help?

Thanks in advance -- Jonathan