Please add the feature to enable single selection for checkmarks. Currently only multi-selection is available. Functionality should work not in the display-state of the visual but on the table-level, in the sense that when a new category is assigned as active, all other categories are set as non-active. If the functionality is added as a display-feature, when filtering away the active category, and selecting a new category, the visual itself will have no knowledge that there is already an active category somewhere else in the underlying table. For added UX - please use the dotted-circle as UI for displaying the chechmark as a single-select option.