Here is where you finally get to enter the item that goes in the compartment of the pack you are working on.
Because you added the item from inserting the record on a compartment, the compartment number is already added for you. Simply type in the description of the item, the quantity, the purpose, color and cost. The category is a lookup so click on the 3 dots to the right of the category and the category list will be displayed.
From here you can select a category, or press insert and add another category. After you've added a category you will the select that category for this item.
Click on Item Notes above and you can enter notes about this item.
The Date Purchased will be filled in with today's date. You can put in a time period in # of days and click update and the Next Date to Check will be filled in for you. You only need to do that for perishable items. This way, when you look at your list of items, if it is time to check on an item, it will show up in red on the list.