1. Click the Home | New Graph | Bar | Vertical Bar Chart command (or add to an existing graph click Home | Add to Graph | Vertical Bar Chart).
2. Select the data file and click Open. The first bar chart is created.
3. In the Object Manager, click the Bar Chart to select it.
4. In the Property Manager, click on the Plot tab.
5. Click the Create button in the New plot field to add each additional bar chart. Note that all of the bars charts will be added to a single group by default.
6. If desired, change the other bar chart properties for each bar chart.
7. If the bars do not stack automatically, click on the Bar Groups tab.
8. Expand the Bar Charts section, and assign the same Group to each bar chart

Once all the bars are in the group, your graph will look something like this:

Grapher stacked bar charts

Updated August 2, 2019