The following version applies only to sole proprietors.
First, you must enter a private deposit in the cash ledger for the amount that you want to have in cash (for example, 300€).
This step is not taken until after you have closed the register.
To keep cash on hand, you must ensure that this money is not transferred when closing the register.
This means that you post a private withdrawal in the amount of the daily sales in the cash ledger before closing the cash desk.
For example, if the sales amount to €2384.47. This amount is recorded as a withdrawal.
When closing the register itself, it is important to ensure that you set the amount in the bank deposit field to 0, so that the closing balance again contains the previously entered previous balance as the final amount, that is 300€.