The 3CX Admin Manual explains how to administer 3CX WebMeeting for your users. Section 1 and 2 are relevant for users of 3CX WebMeeting Hosted as well as On Premise, whereas Section 3 is only useful for those who are setting up 3CX Webmeeting Server.
Section 1: Setup your 3CX WebMeeting Account
Section 2: Advanced
Section 3: 3CX WebMeeting Server (On-Premise)
This section is only relevant for those that have purchased 3CX WebMeeting Server.