1. Open Arcmap software, add a polygon layer park option here, and draw four shapes at will;

2. You can open the property page and check it. At this point, you can add it in this property page;

3. If you want to add the attribute field directly to the attribute table, you must first edit the layer and choose to stop editing; Under the editor;

4. Then right-click the small triangle of the first symbol in the property sheet and select the addfield option, so that you can add fields;

5. Then open the addfield dialog box now, fill in the name and type of the field here, and click Save;

6. Now open startediting under the editor, enter a value at will in the window that appears, and then click OK. Complete the field operation.