As of right now the OBTP does not work if the meeting is scheduled from the Meetings app or a web browser
This scneario is not listed in the OBTP article and when tested it is not working (as expected)
Current behaviour is that the email invitation is recieved in the Resource email for the device but it has to be manually accepted to log the meeting in the calendar and create OBTP on the screen of the device.
Even if the option for auto accept is enabled (tested in O365) the invitation is not accepted. (which seems to be the reason why this is not supported right now)
I am raising this feature request to enable OBTP for scenarios where the meeting is schedueld from Web Browsers or the Desktop Webex Meetings application
It seems that this almost works aside from the need to accept the invite manually, perhaps a change in the email invitation or something from MS side should be enough to get this fuctionaility to work