Canon 463. §1 The following are to be summoned to the diocesan synod as members and they are obliged to participate in it:

1° the coadjutor Bishop and the auxiliary Bishops;

2° the Vicars general and episcopal Vicars, and the judicial Vicar

3° the canons of the cathedral church;

4° the members of the council of priests;

5° lay members of Christ’s faithful, not excluding members of institutes of consecrated life, to be elected by the pastoral council in the manner and the number to be determined by the diocesan Bishop or, where this council does not exist, on a basis determined by the diocesan Bishop;

6° the rector of the major seminary of the diocese;

7° the vicars forane;

8° at least one priest from each vicariate forane to be elected by all those who have the care of souls there; another priest is also to be elected, to take the place of the first if he is prevented from attending;

9° some Superiors of religious institutes and of societies of apostolic life which have a house in the diocese: these are to be elected in the number and the manner determined by the diocesan Bishop.

§2 The diocesan Bishop may also invite others to be members of the diocesan synod, whether clerics or members of institutes of consecrated life or lay members of the faithful.

§3 If the diocesan Bishop considers it opportune, he may invite to the diocesan Synod as observers some ministers or members of Churches or ecclesial communities which are not in full communion with the catholic Church.

§1. Ad synodum dioecesanam vocandi sunt uti synodi sodales eamque participandi obligatione tenentur:

1° Episcopus coadiutor atque Episcopi auxiliares;

2° Vicarii generales et Vicarii episcopales, necnon Vicarius iudicialis;

3° canonici ecclesiae cathedralis;

4° membra consilii presbyteralis;

5° christifideles laici, etiam sodales institutorum vitae consecratae, a consilio pastorali eligendi, modo et numero ab Episcopo dioecesano determinandis, aut, ubi hoc consilium non exstet, ratione ab Episcopo dioecesano determinata;

6° rector seminarii dioecesani maioris;

7° vicarii foranei;

8° unus saltem presbyter ex unoquoque vicariatu foraneo eligendus ab omnibus qui curam animarum inibi habeant; item eligendus est alius presbyter qui, eodem impedito, in eius locum substituatur;

9° aliqui Superiores institutorum religiosorum et societatum vitae apostolicae, quae in dioecesi domum habent, eligendi numero et modo ab Episcopo dioecesano determinatis.

§2. Ad synodum dioecesanam ab Episcopo dioecesano vocari uti synodi sodales possunt alii quoque, sive clerici, sive institutorum vitae consecratae sodales, sive christifideles laici.

§3. Ad synodum dioecesanam Episcopus dioecesanus, si id opportunum duxerit, invitare potest uti observatores aliquos ministros aut sodales Ecclesiarum vel communitatum ecclesialium, quae non sunt in plena cum Ecclesia catholica communione.