This is a screen capture of the Entities editing page. In this image, a data query entity has been selected from the list of entities. This selection opens the data query entity editor, which is divided into the following tabs: General, Configuration, Presentation, Attributes, and Dataset. 

The Attributes page also includes an Add Attribute button.

In this image, the Attributes tab is selected, showing the attribute values for the selected data query entity. The attributes are sorted in a table with the following columns: Name, Type, Referenced Entity, Primary Name, and Synonyms.