Community managers
Community managers are the heart of gatari nation. They handle reports, and cheaters, accept(or reject) ban appeals, plan events,select BATs. In case of gatari, community managers are also incharge of inviting players on the server(= accepting entrance requests). They are also here to help with your daily questions.
Owner
Developers add new features to the server, squash bugs, keep the server up and running and take care of its maintenance. You can distinguish them because they have a blue name in game chat.
Overwatchers
These guys responsible for banning cheaters and bad people
chat mods
chat mods take care about in-game chat and the community.
chat mods have a red name in game chat.
chat mods have a red name in game chat.
BATs
BATs play beatmaps in the ranking queue and decide whether they are good enough to be ranked or not.