New Project
Add data to the columns
Make sure nothing selected in worksheet and choose Plot > Statistical > Stacked Dot Plot
In the Plot Setup dialogue, check the boxes for both A and B ==> A group of two separate plots are generated, when it should be one stacked dot plot
Right click on the layer box at the top left corner, select Layer Properties, and look under the Stack tab in the dialog window that pops up ==> Offset is set to None, when it should be set to Cumulative.