3GPP 21.900 v20.0.0 — the document's own text
3.1 Specifications, meetings and liaisons
Taught in 2. The shape of 3GPP, and what the record does not say about it (How standards actually get made, in depth), 2. The shape of 3GPP, and where the data stops (How standards actually get made, overview), 2. Who writes them — two organisations, two habits (How standards actually get made, quick start).
The Support Team is responsible for the management of the work of the TSGs. This includes editorship and management of specifications once they have been put under TSG change control. It also includes preparation of and support for the meetings (including meeting reports) of the TSGs and their Working Groups, and subgroups in descending priority.
It furthermore includes liaison with other bodies and relevant groups and institutions.