Moderators are here to make sure posts do not breach the community guidelines and to help keep the forum a safe and respectful place for all members.
Community Managers oversee the running of the forum and help devise the policies and procedures which govern the forum. They also run events for the community such as Topic Tuesday and organise guest 'speakers' for these events.
Community Guides are members that take on additional roles within the community such as welcoming new members and keeping threads on track.
Community Elders are members that have previously been Community Guides and are longer term members of the fourm.
I hope that helps @Mulgajane ... @Former-Member @Former-Member may be able to further add their voices here 