You can add attributes and operations to an element using the in-place editing options. To add attributes and operations to a Class diagram element, follow the steps below:
1. | Open the diagram containing the element to which you are adding an attribute or operation. |
2. | Click on the element, and within the element on the item after which to insert the operation or attribute. The item line is highlighted in a lighter shade (the default is white), to indicate that it has been selected.

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3. | Press . Alternatively, right-click on the selected element item to display the context menu and select the menu option.
Enterprise Architect inserts a new data line in the diagram, underneath the selected item. |
4. | Type in the relevant information for the attribute or operation. Press to accept the change or to cancel the change. The diagram is updated to reflect the changes. |