That is an interesting distinction: “in place of”. The bishops and clergy must insure that the liturgical traditions are accurate as feasable to respect the right of the faithful to receive their authentic ritual tradition. And also, the faithful must be assisted by the presbyter, when there is no conflict, in pious assemblies, such as groups meeting in the church for prayers offered together outside of the liturgy. So in a situation where there is no conflict in use of the church, such as might occur before Divine Liturgy, with Matins or the Prothesis, the faithful ought to be free to say a chaplet, or the chotki, even as a pious group in the church. In that case it would not be “in place of” Eastern public prayer.