appointment(ARRANGEMENT)

by appointment

phrase
in the UK, used by businesses to show that their goods and services are sold to a member of the royal family: 经女王御准（英国商家用来表示其商品或服务可提供给王室，因而质量很好）
Carter's Ltd, confectioners by appointment to the Queen卡特有限公司，女王御准糖果商
Apparently the lawnmower was made by appointment to HM the King.
He became dressmaker by appointment to the Queen.
Such establishments were permitted to display a sign: "By appointment to His Imperial Majesty".
Their famous product, made by appointment to the Queen, had become contaminated.
See also