How to enable "Join Before Host" in XML API?

Hi, I want to enable "Join Before Host" and mention also the time period (15 minutes) when creating a meeting?

How to achieve them in XML API? What are the tags? I tried the "joinTeleconfBeforeHost" tag. But it says the this teleconference type does not support. Please help.

Hello,

     The related XML API element is openTime, a child of schedule. For CreateMeeting, this element accepts values in seconds matching 0, 5, 10, or 15 minutes (5*60, 10*60, 15*60). Registration must be set to FALSE for openTime to accept a non zero value. You can review the openTime description in the XML API reference guide.

Thanks a lot nathan.