Column charts can be used to show cumulative totals or change over time, as well as qualitative (features, properties) data. Bar charts are horizontal, whereas column charts are vertical.
A column chart requires at least one X Axis and one Y Axis data. You can add more than one data to the Y Axis field to create multiple series.
Alternatively, you can select a Group to separate the Y Axis data accordingly.
Please note that the Y Axis needs to contain numeric fields and remember to select an Expression for each numeric Y Axis field by clicking on the field first and then choosing from the drop down.
Column charts are Stacked by default. To “unstack” it, uncheck the Is stacked? box.