To edit a category, right-click on a category name, and choose . A window comes up with three tabs: General, Hierarchy and Tax.
The General tab allows you to edit the name of the category and any notes you entered when you created the category.
The Hierarchy tab allows you to change the parent category. You can change the parent category by clicking on another category in this view of the category hierarchy. In an earlier version of KMyMoney it was possible to change the parent of a category by dragging and dropping. This functionality will return in a future version, but possibly not until the conversion of KMyMoney to KDE Frameworks.
The Tax tab allows you to assign or change VAT category, or alter the automatic VAT assignment. It also allows you to toggle whether or not the category is included in certain tax related reports.