Uh yes, you do. In every judicial district in the state,the jurors enter at the PUBLIC opening, pursuant to CRCP 14 which governs juror access. Read the statute. Secondly, witnesses  also enter through the courtroom door, mandated to curtail "even the slightest impropriety of ex parte communication..." Witnesses TESTIFY IN OPEN COURT & ON THE RECORD!!! When is the last time that you attended a trial??????