To access your Conference settings go to the Main Menu, choose the SETTINGS option, User Settings link and focus at the Conference Bridge section (check the image below).
The settings from this section refer to a specific Conference room, so in case you have more than one conference room assigned, make sure you choose the right one before making any changes. The changes made here relate to:

enabling / disabling a conference room;
adding / changing the moderator / participant PIN;
limiting the number of participants to your conferences;
enabling / disabling quick-starting or auto-recording;

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