Basically, the classification structure of whooing is like this. It has a category of'Account> Item> Item'. However, when the items are similar, but cannot be grouped, and when the grouping is ambiguous even with the account management function, the number of items eventually increases. In this case, similar items can be grouped together and displayed as a group. In other words, create another hypothetical classification between accounts and items, such as'Account> Group> Items> Items'.
Group inclusion relationships can be created by changing the order of items. A group takes items below itself as its children.
Since items and groups are completely different properties, you cannot swap items and groups in the middle.