So I can’t choose for myself?
Don’t know if you saw post 5, it was not linked.
You have the most power in the church of ascription, and also the most obligations, since there are certain rights and obligations pertaining to the Church sui iuris that you are ascribed to canonically, in addition to the universal Church. The clergy are bound to administer the sacraments per their Church sui iuris, but with regard for the sacramental discipline of those receiving, which is limiting. Examples eastern canon law:CCEO
12.1. The Christian faithful are bound by an obligation in their own patterns of activity always to maintain communion with the Church.
12.2. They are to fulfill with great diligence the duties which they owe to the universal Church and to their own Church sui iuris.
14 All the Christian faithful have the right and the obligation of working so that the divine message of salvation may increasingly reach all peoples in every age and in every land.
15.1. The Christian faithful, conscious of their own responsibility, are bound by Christian obedience to follow what the pastors of the Church, as representatives of Christ, declare as teachers of the faith or determine as leaders of the Church.
15.2. The Christian faithful are free to make known their needs, especially spiritual ones, and their desires to the pastors of the Church.
15.3. In accord with the knowledge, competence and position which they possess, they have the right and even at times a duty to manifest to the pastors of the Church their opinion on matters which pertain to the good of the Church, and they have a right to make their opinion known to the other Christian faithful, with due regard for the integrity of faith and morals and reverence for the same pastors, and with consideration for the common good and the dignity of persons.
16 The Christian faithful have the right to receive assistance from the pastors of the Church from the spiritual goods of the Church, especially the word of God and the sacraments.
17 The Christian faithful have the right to worship God according to the prescriptions of their own Church sui iuris, and to follow their own form of spiritual life consonant with the teaching of the Church.
18 The Christian faithful are free to found and to govern associations for charitable and religious purposes or for the promotion of the Christian vocation in the world; they are free to hold meetings to pursue these purposes in common.
19 All the Christian faithful, since they participate in the mission of the Church, have the right to promote or to sustain apostolic action by their own undertakings in accord with each one’s state and condition; however, no undertaking shall assume the name “Catholic” unless the consent of competent ecclesiastical authority is given.
20 The Christian faithful since they are called by baptism to lead a life in conformity with the teaching of the gospel, have the right to a Christian education by which they will be properly instructed so as to develop the maturity of a human person and at the same time come to know and live the mystery of salvation.
21 Those who are engaged in the sacred disciplines enjoy a lawful freedom of inquiry and of prudently expressing their opinions on matters in which they have expertise, while observing obsequium for the magisterium of the Church.
22 All the Christian faithful have the right to be free from any kind of coercion in choosing a state in life.
23 No one is permitted to damage unlawfully the good reputation which another person enjoys nor to violate the right of any person to protect his or her own privacy.
24.1. The Christian faithful can legitimately vindicate and defend the rights which they enjoy in the Church before a competent ecclesiastical court in accordance with the norm of law.
24.2. The Christian faithful also have the right, if they are summoned to judgment by competent authority, to be judged in accordance with the prescriptions of the law to be applied with equity.
24.3. The Christian faithful have the right not to be punished with Canonical penalties except in accordance with the norm of law.
26.1. In exercising their rights the Christian faithful, both as individuals and when gathered in associations, must take account of the common good of the Church and of the rights of others as well as their own obligations toward others.
26.2. In the interest of the common good, ecclesiastical authority has competence to regulate the exercise of the rights which belong to the Christian faithful.
32.1. No one can validly transfer to another Church sui iuris without the consent of the Apostolic See.
32.2. In the case of Christian faithful of an eparchy of a certain Church sui iuris who petition to transfer to another Church sui iuris which has its own eparchy in the same territory, this consent of the Apostolic See is presumed, provided that the eparchial bishops of both eparchies consent to the transfer in writing.
36 The transfer to another Church sui iuris takes effect at the moment a declaration is made before the local hierarch or the proper pastor of the same Church or a priest delegated by either of them and two witnesses, unless the rescript of the Apostolic See provides otherwise.
35 Baptized non-Catholics coming into full communion with the Catholic Church should retain and practice their own rite everywhere in the world and should observe it as much as humanly possible. Thus, they are to be enrolled in the Church sui iuris of the same rite with due regard for the right of approaching the Apostolic See in special cases of persons, communities or regions.
403.1. With due regard for the right and obligation to preserve everywhere their own rite, lay persons have the right to participate actively in the liturgical celebrations of any Church sui iuris whatsoever, according to the norms of the liturgical books.
