Please, move this post to Telepresence community. This community is for Cisco WebEx Meetings Server (on premise) and CIsco Unified MeetingPlace products.
I hope this will get you to the answer faster.
We can provide cms management software to schedule and control meeting. We just released free version. You can have a try. Send me a mail, I can give you more detail.
my mail is firstname.lastname@example.org
I wrote a simple scheduler that requires PHP web pages served up from a web server, and a connection to MS-SQL to hold the entries. The database maintains scheduled events, generates conference ID's and both guest and host PINs, or the user can override the auto-generated numbers and enter their own in the schedule setup. At the appointed time a PHP script sets up the conference by sending parameters to the CMS API. Options include guest/host permissions, mute, etc. Scheduled events can be duplicated to create a series. Users can be manually setup or by AD group. I could re-write it to use MYSQL, and you could run it from a LAMP or WAMP web server.