1. While you are relieving yourself, you should not make salaam to any person or reply to the salaam of any person. Similarly, if a person is relieving himself, you should not make salaam to him.
2. You should make salaam to your elders with humility in a low voice.
3. If you promise to convey the salaam of a person to someone else, it becomes waajib on you to fulfil the promise and convey the salaam.