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 change its child nodes, you must follow this procedure: Clicking on the $\leftrightarrow$ icon in the node toolbar will show a list of parent and child nodes for that node. You can click on the + or $imes$ icon to add or remove a parent or child node. If you have chosen to add a new relation, you will need to click on the destination node to select and add it to the list.