To create a list of your top 100 customers:
- Click Reports > Customers > Lists > Top 'N'.
- In the Top 'N' field, enter 100.
- For Sale Date, decide whether you want to base this on a range, like last three years, or if you want all-time set this to All Dates.
- Click OK to generate the report.
- In the report toolbar at the top, click the icon of the person. This will open the Pick a Group / Mailing List window.
- Create a new group for these customers now or select an existing group to add them to it.
NOTE: Any report that includes customers will give you the ability to easily put those customers on a Group / Mailing List.