The main work of the project is carried out in the Technical Specifications Groups. The official calendar of their meetings is best viewed via the 3GPP Portal.
The graphic below is provided to give the reader a feel for how quickly we are planning to get back to F2F meetings as the norm (up-to-date December 2022):
There is no direct membership to 3GPP, which is a Partnership project. The delegates come to 3GPP via their organization’s membership of one of the seven 3GPP Organizational Partners. See the Membership page for details of how to join...here: https://www.3gpp.org/about-us/membership