1. In the Model Tree, right-click an upper-level node or in an empty area and choose New Node from the shortcut menu. A new node with a default name appears nested under the upper-level node or as the last item in the Model Tree.

2. To change the default name of the node, right-click the tag and choose Rename from the shortcut menu. Type a new name for the tag.

3. To assign all new entities to the node, select the node in the Model Tree and right-click and choose Designate from the shortcut menu.