Career
He was installed for a three-year term on 12 July 2015 at a service at Perth"s Scotch College. In 1982, McMillan was interviewed for and appointed to a position as an accountant with the UCA"s Northern Synod, based in Darwin, Northern Territory. McMillan has had many roles in the Northern Synod and associated organisations: accountant, operations manager, general manager of the Arnhem Land Progress Association (ALPA) - now the Arnhem Land Progress Aboriginal Corporation, pastor, cultural awareness trainer, resource worker, community developer, and Moderator.
McMillan was involved in researching the claimants" situations, and making trips to Canberra to assist Review
Doctor Gondarra and others as they gave their input on the drafting of the Native Title Acting under Prime Minister Paul Keating. The McMillans became part of the Humpty Doo semi-rural community near Darwin, and its Uniting Church.
After several ministers, McMillan took on the role of pastor, presiding over weddings, funerals and other activities of an ordained minister. Moderator, Northern Synod
Mrs Ros McMillan served as Moderator of the Northern Synod, based in Darwin, from 1996-1999.
Mr Stuart McMillan served as Moderator for five years until June 2015.
President of the Assembly
McMillan was elected as President-Elect at the 13th Assembly, held in Adelaide, South Australia in July 2012. McMillan was installed as the President of the UCA on Sunday 12 July 2015, at the 14th Triennial Assembly held in Perth, Western Australia (12–18 July 2015). He replaced the Review Professor
Andrew Dutney.
He started his address to the installation service with the words, in the Yolŋu language, “Bala limurr roŋyirr ŋorraŋgitjlil” – “Let us return to the white ashes of the fire”, an allusion to the Holy Spirit. As a lay President, McMillan’s role in worship will be slightly circumscribed.