Q.What order are items displayed in?

By default, items are displayed at the top of item lists when they have just been added, and at the bottom if they have been hidden and have just been set to be displayed. This applies to the list of all items as well as to category and group lists.

Item display order can be changed. To do so, navigate to Inventory → Item list. Click the (Up) and (Down) buttons to change the order in which items should be displayed within their category or group.

Item sorting can also be changed at Inventory → Item sorting. Select the category or group you wish to sort, and then enter your desired display positions in the Sort column and click Move.

On the list of all items in shop, items are displayed in the designated order by category. To change the order in which categories are displayed, please see the following FAQ article:
How do I change the display order of categories or groups?