Creo Direct > Designing in the Creo Direct Environment > To Restructure an Assembly
  
To Restructure an Assembly
1. In the Model Tree, select a component in a subassembly. Or hold down the CTRL key to select more than one component. All the components selected must be on the same level in the subassembly. You can also select one or more subassemblies in a top level assembly.
2. Drag the selected components in the model tree to restructure.