A secretary is traditionally read as organisation and the keeping of schedules and secrets. It reflects support given behind the scenes, or a need to get your affairs in order.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.