Each entity has a set of attributes and relations. You can add a new attribute once an entity is selected.
To add a new attribute, in the model editor, select an entity, for which you want to add a new attribute, and click the Add button in the Attributes section.
Note that the Properties pane automatically expands on the right of the workspace.
Enter the name and description for the new attribute.
In the Attribute Type field, select the attribute source type - database field, related entity, or sql expression.
The following example adds an attribute by binding to an existing field of the entity, such as 'Description'.
Click the Add button. A newly added attribute will appear in the list of attributes of the data model's entity.