Our Confluence App DataTables for Confluence now supports multi-column sorting. As in any Confluence table, sorting is enabled and disabled by clicking on the column’s header row cell. With DataTables for Confluence, you can also add a secondary, tertiary etc. sorting column.
To do this, just press shift and click on the header row cell of the additional columns. Clicking twice reverts the ordering and clicking three times removes the additional column from the sorting again.