You can record your sales here. 

First, select the marketable livestock product - from the ones you recorded in the software under master data / products / farm products into the marketable livestock category - then the population from which it comes from. 

Second, specify the customer - recorded under master data / partners / customers -, the sold number, their weight and the date of the sales. 

Before saving you can specify the employee and add notes if you wish. Those icons are next to the Save button.