Is it possible to change the subject and description of a conference via UCMA 3.0 (or 4.0) after it has been scheduled?

A subject and description is provided when a conference is scheduled. (code snippet below).

Is it possible to change the subject/description after the conference has been scheduled either before the first participant has joined or after the first participant has joined?

To reduce set up latency, in our app we pre-schedule some conferences and allocate them as needed. The topic is not known till the allocation is done.

// Create conference scheduling details for the conference.
            ConferenceScheduleInformation scheduleInfo = new ConferenceScheduleInformation();



            // Set a subject for the conference.
            scheduleInfo.Subject = subject;
            scheduleInfo.Description = subject;
            scheduleInfo.ConferenceId = ConferenceServices.GenerateConferenceId();
            scheduleInfo.ExpiryTime = System.DateTime.Now.AddHours(8);
            scheduleInfo.IsPasscodeOptional = true;
            scheduleInfo.PhoneAccessEnabled = false;

UCFin