About layout part typesNote You may want to create the summary fields that you want prior to creating a summary part. For more information, see Defining summary fields.
• If a break field is placed in a subsummary part, it will always appear in the left-most column in Table View. Break fields appear at the bottom of leading parts or the top of trailing parts.
• FileMaker Pro automatically adds field labels (such as Total) to subsummary parts to identify the data displayed.