You can mark items in visualizations by interacting with lists or list items in the panel.
To mark items in visualizations:
Make sure you have selected the correct identifier column in the drop-down list.
Select the lists or list items of interest in the Lists panel.
On the Lists toolbar, select Menu > Mark Items.
Response: The items corresponding to the selected lists or list items are marked in the visualizations.
Comment: You can also double-click on a list or list item to mark the corresponding items in the visualizations.
To mark items automatically:
On the Lists toolbar, select Menu > Mark Automatically.
Response: When you click on a list or list item, the corresponding rows will now become marked automatically.