3GPP 21.900 v20.0.0 — the document's own text

8.6 General

Taught in 8. How a 3GPP meeting decides, and the word it decides in (How standards actually get made, in depth), 6. Two ways of deciding (How standards actually get made, overview).

in exceptional cases when the procedure cannot be followed a clear notice from Chair is required;
emails on mailing lists shall contain a subject with meaningful keywords, e.g. SA1 Tdoc xxx on Charging and/or 22xxxCR012r4;
if there are no comments during the allowed period, agreement is granted automatically;
status reports to higher level body meetings, should be emailed to the mailing list one week before the meeting. This allows delegates a final possibility to review the progress in the last period.