Just in brief.

newcomer - 0-5 days - any lvl
initiate - more than 5days - 10 days - any lvl
adept - more than 10 days - 20 days - any lvl
clerk - more than 20 days - lvl 30 and higher
cadre - more than 30 days - lvl 40 and higher
officer - more than 40 days - lvl 50 and higher
paladin - special rank - lvl 50 and higher
elder - more than 60 days - lvl 50 and higher
vice leader - special rank, only leader can grat to this rank
leader

Offline more than 30 days (without reason) = KICK!