- Ensure that you have the Maplex Label Engine enabled and that you have enabled label stacking.
- Click the Label Manager button on the Labeling toolbar.
- Check the check box next to the layer you want to label.
- Choose a label class under the layer.
- Click the Label Field drop-down arrow and click the field you want to use as the first part of the label expression.
- Click Expression.
- Click the next field with which you want to label features from the Label Fields list.
- Click Append.
- Select the space and type a character, such as a forward slash (/), between the fields. This character will be used to stack the labels.
- Click Verify to see a preview of the label.
- Click OK to close all dialog boxes.
- See the Add and remove stacking characters topic for steps on how to add the forward slash character to the list of stacking characters.
When you use the Append button to add fields to the label expression, the fields are automatically concatenated with the ampersand (&) symbol, and a space is inserted in the label between the fields.