Start by logging into the Control Panel (cp.poslavu.com) and click Reports. Click Z1 Reports.
Click Modifier Usage.
Modifier Usage breaks down the activity of forced and optional modifiers. Once a date range is set, reports will adjust accordingly. Modifiers are broken down by quantity and cost. There are columns for Product Codes and Tax Codes if they are set up in your location.
Forced modifiers are displayed at the top of the report. Scroll down to see the Optional Modifier usage report.