Webex Meetings automatic lock capability only supports locking the meeting up to 20 minutes after start of the meeting.
This request is to support additional options upto an hour (for hour long meetings ), or a flag to say "x minutes prior" to the end of the meeting. Example: Auto-lock meeting 10 minutes prior to the end of the meeting
The most flexible option would be a free-form/other option to choose any time
An example usecase is for office-hour type meetings where attendees drop in at any time, but not too close to the end time that causes the meeting to extend its planned end time