Respect the elderly
It is engrained in Zambians from childhood to respect their elders. So, when serving or greeting elders, children or younger people must kneel as a sign of respect. During adult conversations it is considered rude to interject conversations unless the younger one is directly addressed in the conversation. Also, the left hand must by no means be used to accept anything even if you are left-handed (southpaw) because it is deemed as rude.