After closing the seller's window, all sales made there are shown in the sales table. For each of them, in the program, you can print the necessary documents, in addition to the check, namely: an invoice, an invoice for payment, a sales invoice and an act of completion (for services).
To select which document to print, you need to select the desired sale and select what you need in the reports in the upper left corner of the table. For example, a sales invoice:
The finished invoice will look like this for each item: