In Microsoft Excel, to draw attention to a specific marker in a line chart, drop in a thin line, think of it as a marker.

How to Make and Add Labels on a Graph in Excel. For even the most new-to-the-program users, compiling a graph in Microsoft Excel is fairly intuitive. Excel offers a one-click option on its "Insert ...

If you want to make your charts easy to interpret, insert a trendline or moving average line in Excel worksheet. See the list of steps to get it done in no time!

Remove chart title, grid lines, vertical axis numbers, and chart border for a polished look. Enhance timeline by adjusting line color, thickness, and optionally formatting the x-axis as a right arrow.