The organizational and hierarchical aspects of this are explored in more detail under protocol. However, in terms of etiquette, it would be a serious mistake to expose someone to ridicule, to publicly lower their status, or to seem to "put them down", even in private. Whether what you do or say to cause this is unintentional is beside the point. They lose face because of you.   If it is intentional, so much the worse: that is a grave insult.

The objective between two polite persons should be to enhance each other's "face". So, observe self-discipline to the maximum, but make all possible allowances for other people. Remember  that what may be an acceptable behaviour or form of address in private between people who have got to know each other well may not be acceptable between the same persons in public. This concept of "face", or public status, is the basis for most of the other points discussed below.

Punctuality can never be wrong and is very relevant to face in many cultures.  Always be on time for business appointments. There may be more latitude for social appointments in certain areas- e.g. Latin America. But never arrive significantly before time for any appointment or you may catch people unprepared and cause embarrassment.