Va. Code § 19.2-184: Witnesses may be separated (Subsection (a) of Supreme Court Rule 2:615 derived in part from this section)

While a witness is under such examination all other witnesses may by order of the judge be excluded from the place of examination and kept separate from each other.Code 1950, § 19.1-104; 1960, c. 366; 1968, c. 639; 1975, c. 495.