Cal. Government Code § 12963.3

(a) Depositions taken by the department shall be noticed by issuance and service of a subpoena pursuant to Section 12963.1. If, in the course of the investigation of a complaint, a subpoena is issued and served on an individual or organization not alleged in the complaint to have committed an unlawful practice, written notice of the deposition shall also be mailed by the department to each individual or organization alleged in the complaint to have committed an unlawful practice. (b) A deposition may be taken before any officer of the department who has been authorized by the director to administer oaths and take testimony, or before any other person before whom a deposition may be taken in a civil action pursuant to Section 2025.320 or subdivision (d) of Section 2026.010 of the Code of Civil Procedure. The person before whom the deposition is to be taken shall put the witness on oath and shall personally, or by someone acting under the person’s direction and in the person’s presence, record the testimony of the witness. The testimony shall be taken stenographically and transcribed unless the parties agree otherwise. All objections made at the time of the examination shall be noted on the deposition by the person before whom the deposition is taken, and evidence objected to shall be taken subject to the objections.