Teach about morals and character when teaching students to solve their problems.
With students who have healthy self-concepts, you can discuss an aspect of character or moral value with defining the problem and what did you choose to do steps. But this has the potential of turning into a criticism sort of kicking them when they are down. It is usually more positive and students are more willing to think about and discuss an aspect of character when discussing what they plan to do in the future.
Like most tasks principals and teachers have, devising something is only part of it. The next steps are to implement, monitor, evaluate, and adjust accordingly. If you choose to include character education, be sure it is something you believe in. Be sure it is something that the community can believe in. Make sure you are willing to teach it, model it, and use when interacting with the students. When the students learn and accept these beliefs, your job is much, much easier.