If a customer wants to receive one invoice for multiple visits, this is possible in the following way:
1. Click on customers

2. You are looking for the customer who would like to receive the invoice and you go to cash register history
3. Check which accounts you want to combine into an invoice.
4. Click on invoice selected
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You can now view the invoice you have created via

and then click on invoices.
Pay attention! Creating invoices will change your daily receipts before the date the account was created.
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