The Portmaster's office was situated in the Trannon district of Carannia, which served as the capital city for the Outer Rim Territories planet of Serenno. This office, positioned quite a distance from the Carannia Spaceport, had authority over the flow of space travel both arriving at and departing from the spaceport. As a result, a computer within the office could access both tickets purchased for departures from Carannia and the facial recognition security measures in place at the spaceport. Typically, the office was staffed by a Portmaster, a supporting assistant, and a minimum of one security droid. During 23 BBY, the Sith assassin Asajj Ventress, in her mission to find Jenza, who was Dooku's sister, forcibly entered the office and employed a mind trick on Yepa, the Portmaster's assistant, compelling him to prepare a cup of Caf in Saffia, a different city located on Serenno. Ventress subsequently questioned the Portmaster, Raz Fellidrone, regarding Jenza's location. Upon discovering that Jenza had not boarded her intended flight to Coruscant in the Core Worlds, but had instead been abducted by a Crolute, Ventress departed from the office. However, prior to her exit, she cautioned Fellidrone that any disclosure of the events that had unfolded would result in the removal of his tongue.