Pick the right moment to talk.

To do this you have to study a person, to know more about his/her daily routine, work schedule, habits, favorite places, and company. For example, many managers try to do most of their work at the beginning of the day. Monday is the most hectic day, while on Friday people think less about business. So it's worth choosing a time in the afternoon in the middle of the week. Choose the most optimal time to arrange your effective meeting.