Possibility to disable public meeting

In previous Versions (6.2) it was possible to easily disable specific Join Mode

e.g. Public,SimpleCode,.. with the following properties:

SessionPanel.PropertyJoinModeSimpleCodeVisible
SessionPanel.PropertyJoinModeSecureCodeVisible
SessionPanel.PropertyJoinModePublicVisible
SessionPanel.PropertyJoinModeInvitationOnlyVisible

In our case public sessions are a security risk.