Select the 'ML6 Octahedral' from the metal complex structures and place it in the drawing area
Notice that six dummy ("Xx") atoms have been placed around the metal center in an octahedral fashion.
Select all the dummy atoms by right-clicking (or click and hold down) to get the atom popup Select Atom Popup → 'Select all Xx
The Ligands structure submenu contains a number of ligands which can be used to replace the dummy atoms. The Structure menu can, however, also be reached via the atom pop-up menu.
Right-click on one of the selected dummy atoms Select the Atom Popup → Ligand → CN structure
Notice that all dummy atoms in the selection are replaced by CN ligands.
