The Eastern Churches in communion with the Apostolic See of Rome have a special duty of promoting the unity of all Christians, especially Eastern Christians, ... by prayer in the first place, and by the example of their lives, by religious fidelity to the ancient Eastern traditions, by a greater knowledge of each other, by collaboration and a brotherly regard for objects and feelings.
Orientalium Ecclesiarum, 24
Meanwhile, in the Ukrainian Greek-Catholic Eparchy of Wrocław-Gdańsk...
It was reported that the Bishop said that "he [wa]s not aware of any permission for female servers in the Ukrainian Greek Catholic Church" - and suggested "direct contact with the organizers" of the "Sarepta Youth Camp" [though it is located in his eparchy and though the youth retreats are led by members of the Ukrainian Greek-Catholic Church in Poland].
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Source: Forum Krzyż; Tip: Catholic Church Conservation.