Liaison officer

A liaison officer was a spokesperson who represented the interests of his or her government or other affiliation. They might operate on liaison protocol.

Section 31 assigned to be their liaison officer on board the USS Discovery. Faced with a choice of taking on either Tyler or $𝜇$, Christopher Pike grudgingly accepted Tyler as the liaison officer. 

In 2370, Deanna Troi was made Ambassador Loquel's personal liaison officer for the duration of the Iyaaran's stay on USS Enterprise (NCC-1701-D). 

Kira Nerys was the Bajoran liaison officer on board the space station Deep Space 9 since 2369, representing the Bajoran Provisional Government and the Bajoran Militia when the Federation helped rebuild it. 

One job of the liaison officer aboard DS9 was to compile the material subsistence report, a job that Commander Sisko had to do when Kira was unable to assist him. 

Julian Bashir acted as a liaison when the Federation ambassadors Taxco, Lojal, Vadosia, and Lwaxana Troi visited Deep Space 9 later in that year. 

Li Nalas was made Deep Space 9's liaison officer by Jaro Essa for a brief period in early 2370. It was shortly after his return from prison on Cardassia IV. 

A Cardassian liaison officer kept in close contact with Starfleet Admiral Kennelly during the crisis involving the Bajoran resistance leader Orta and his alleged attack on Solarion IV. 

T'Rul served as a Romulan liaison officer assigned to supervise the operation of a cloaking device loaned to the Federation and installed on the USS Defiant (2370) in 2371. 

In an alternate timeline, when it took USS Voyager 23 years to return to the Alpha Quadrant, B'Elanna Torres served as a Federation liaison to Qo'noS, the Klingon homeworld in 2404.