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.

However, if you add a series of data points to a spreadsheet, Excel doesn't know to include these on an existing chart. To include this data, you must manually add the series to the chart.

What Is a Clustered Chart in Excel?. A cluster chart is like a bar chart except that it clusters several bars into a category and displays each cluster separately from the rest. For example, you ...