In this Article, Professor Underwood discusses the varying application of Rule 615 of the Federal Rules of Evidence, which provides for the exclusion of witnesses. He explains that varying application of Rule 615 and state evidence rules following Rule 615's language creates misunderstandings at trial. Thus, it is important to know not only the federal and local rules but also the "way things are done" in a particular court.
Richard H. Underwood, Following the Rules: Exclusion of Witness, Sequestration, and No-Consultation Orders, 35 Am. J. Trial Advoc. 523 (2012).