"additionally appointed" is correct and can be used in written English.
For example, "The committee was additionally appointed by the governor to review current legislation."
Mansell retained his existing post and was additionally appointed deputy director-general.
In 2005 he was, additionally, appointed the Minority Parliamentary Spokesman for Foreign Affairs.
In September that year he was additionally appointed trustee of the Services Canteens Trust Fund; a position he held until October 1952 and for which he received a letter of appreciation from the Minister for Defence.
Calvert's personal fortune was secured when he was additionally appointed a "commissioner of the treasury" with a pension of £1,000 pounds sterling and a subsidy on imported raw silk, which would later be converted to another £1,000 pension.
Additionally, appointing somebody responsible for safety netting may prevent it being neglected, and publicising available safety netting materials may lead to wider use.
Additionally, he appointed boards of commissioners to safeguard public buildings, the water supply and the maintenance of the roads.
Additionally, we appointed a second nurse in the operation theatre for keeping track of in- and outflow, as well as providing regular feedback to the surgeon and anaesthesiologist for every 100 mL uptake.
Additionally, the man Perry appointed to oversee Texas' consumer watchdog, William White, is also vice president of payday lender Cash America.
Additionally, the first woman appointed United Nations Force Commander was Kristin Lund of Norway who, prior to this, served as the first female Chief of Staff of the Norwegian Home Guard.
Additionally, political scientists find that congressmen appointed to their position (if, for instance, the current seat holder dies), do not enjoy the same advantage as those who are elected to office.
Additionally, the nursing home population is appointed to account for many potentially unnecessary hospitalisations, with estimates between 19 67% [ 17- 20].
