If you use the adjective ancillary to describe your position you are subordinate or supporting something or someone else.

Pronunciation: /'ænsəlɛri/
English description: furnishing added support
Synonyms: accessory
Chinese Translation: 副的(fu4 de)
Spanish Translation: auxiliar
ORIGIN: The adjective ancillary originally meant "relating to maidservants" from the Latin, but the element of a female servant has fallen away and now the word merely refers to a position as helpful or subordinate. An example of how something in medicine can be ancillary is after you have surgery you may also take a drug to aid healing — the drug would be considered ancillary to the surgery. One could also argue that in the United States the vice-president takes an ancillary role to the president.

EXAMPLE SENTENCE:

Not something ancillary or secondary to the immutable fact of the guns themselves.
But libraries also offer an array of other ancillary information services—and, critically, assistance to help visitors make sense of them.

*New word description, story and part of "EXAMPLE SENTENCE" are cited in Vocabulary.com