Energy levels: ADFlevels

Select 'Levels' from the 'SCM' menu
Make the ADFlevels window wider by dragging the lower right corner
Select 'Interactions->Show' from the 'View' menu
Select 'Labels->Show' from the 'View' menu
Click once in white space so that nothing is selected

In this level diagram you can see that the HOMO and LUMO consist mainly of carbon p orbitals. It is also easy to see what orbitals the hydrogens take part in.

Note that the carbon and hydrogen stacks show all carbon and hydrogen atoms at once: they show the fragment type. ADFlevels can also show the individual fragments but when using atomic fragments you will get too many fragments. In this particular case symmetry is used, and since there is only one symmetry unique carbon atom and only one symmetry unique hydrogen atom you still would see only one stack per atom type.