In 1Cademy the hierarchy of concepts and their meaningful relations are crucial. If you find out that a node is not correctly related to its parent nodes or if you want to propose additional parent nodes or if you want to change its child nodes you have to follow this procedure: Clicking on the $\leftrightarrow$ icon in the node toolbar, a list of parent and child nodes of the node will be shown, you can click on +or$\times$ icon to add or remove a parent/child node. If you have chosen to add a new node you will need to click on the destination node to select and add to the list.