Select the statistics/advanced sales option, then the blue circle in the lower right corner.
When issuing an "advance sales" invoice, instead of the name of the item, enter a numerical code depending on the VAT rate at which the sold item was taxed, and the name "Advance" and the amount of the received advance according to the VAT rate. So:
For O-VAT enter 10:Advance
For P-VAT enter 11:Advance
For Without VAT enter 12:Advance
For Not included in VAT, enter 13:Advance
In addition, if necessary, by clicking on the three dots in the upper right corner and selecting the appropriate option, if necessary, enter a note (in which you must enter the exact names of the items and their total prices), the client and, of course, the date and time of payment.
At the very end, by clicking on the card in the upper right corner, first of all, you activate the "advance without fiscalization" option, then you choose the appropriate payment method, where a window opens for you to enter the account reference number in the format XXXXXXXX-XXXXXXXX-account number