You can limit the number of products sent for each transaction.
In order to activate limits, go to the settings of the selected monitoring, and then on the right, select the Shipping settings option. Next, in the Limiting the amount of sent codes section enter the maximum number of codes that can be sent for each transaction from this monitoring.
Example: if you limit the number of codes sent to eg. 3, each customer who buys more than 3 codes will receive only 3. The limit of sending for transactions can be deleted in the transaction register.
The limits of the number of codes sent operate only for transactions that were created when this setting was active. This option is not retroactive.