The way I understand this is the defense or the prosecution would have to request the sequester of the witnesses. If no request has been filed and/or granted, witnesses are allowed in the courtroom.
"Upon request of one party, witnesses who are expected to give testimony at a later point in the trial may be excluded from court to prevent their hearing any earlier testimony. Sequestration may only be applied to witnesses, and not to parties to the dispute even though they may be called upon to testify. In addition, parties found to be victims may not be sequestered."
SCJB Special Matters at Trial
