Statistics › Reports has three reports:

Billing report

The month's billing without VAT, by memberships, store and percentages. Choose the dates and click Generate.

Professionals' classes

The classes each professional has taught and the accumulated bookings per service. With Detailed view you also get the purchase details per client.

Tip: this is the report you need if you pay your instructors per class.

Generate monthly receipt

A PDF summarizing a client's invoices for a month. Search for the client, choose the month and generate it.