It should follow the other questions regarding information on the farm, the income and the other standard expenses of farming. At the top of your screen when you are in the program, you can find this section by following these steps:
(top of screen) click on Business Income > then click on Farming Income and Expenses > then scroll down the page to "Farm Expenses" > "Other Miscellaneous Expenses" (towards the bottom of the page) - and click on "start" to the far right of this line and it will take you to the section you are looking for.