In the Modeling screen, right-click on an object or connection and select  Format Edit Attribute Placements .

The Attribute placement dialog box opens

Select the Add button.

The Add attributes dialog box opens. All attributes that have not yet been placed are listed. Maintained attributes are marked with a preceding symbol.

Select the attributes you want to add.

Select OK.

The attributes are inserted and selected in the Placed attributes table.

In the Placement box, click on the position in the object where the attributes are to be placed.

Select the desired appearance properties in the Representation field.

Select the Preview button to check the effects of your changes in the model window.

Select OK.