You add a column for the combined values and then group if you want to combine those values further into a single record.

Figure G Add a table of consecutive values that match the corresponding months chronologically. SEE: Learn how to add action buttons to a report in Microsoft Power BI.

Notes High Sierra: How to add a column to a table Click anywhere in the column next to where you want the new column to appear. It can be to the left or right of where you want the new column.