I shall let this intro from the document from the Conference of Catholic Bishops of England and Wales suffice. The document itself is available here, or from the download link in the menu above:
“The title of the 2023 Synod of Bishops is “For a Synodal Church: Communion, Participation, Mission.” For the first time, the Synod Office in Rome has produced a comprehensive process which encompasses the stated aim of the Holy Father that the Church in today’s world should have a vision of missionary communion orientated to evangelisation. The process begins in the Particular (or Local) Church and then moves to the level of the Bishops’ Conference. From there, discernment takes place in the Regional Area – for England and Wales, it would be steered by the European Council of Bishops’ Conferences (CCEE) – before moving to the Universal Church with the final Synod Gathering of Bishops in 2023, sub et cum Petro.”The Synodal process, CBCEW
The idea seems to be a redeployment of Church resources based on consultations made at the level of the parishes and dioceses. Please download and read the document using the link above or from the menu for more detail.