In this case you can choose one of the predefined values.
To select a property value from the non-editable predefined list
- Click an appropriate property value cell.
- In the drop-down list, select the value.
To remove a property value selected from the non-editable predefined list
- Click an appropriate property value cell.
- In the drop-down list, select <UNSPECIFIED>.
The property value can be removed only for those properties, that can have an empty value.