Here is a description of the rankings in guild:
Muted - see GChat, cannot chat in GChat, cannot see Gbank, cannot withdrawn from GBank, cannot deposit in GBank, cannot invite people. cannot kick people, cannot promote people, cannot demote people (People are muted for spamming, over trolling etc..)
Invited - see GChat, can chat in GChat, see some Gbank Tabs, cannot withdrawn from GBank, cannot deposit in GBank, cannot invite people. cannot kick people, cannot promote people, cannot demote people (New guildies will have this rank)
Alt - see GChat, can chat in GChat, see some Gbank Tabs, cannot withdrawn from GBank, cannot deposit in GBank, cannot invite people. cannot kick people, cannot promote people, cannot demote people (Alts will have this rank)
Member - see GChat, can chat in GChat, see some Gbank Tabs, can withdrawn 1 slot from GBank, cannot deposit in GBank, cannot invite people. cannot kick people, cannot promote people, cannot demote people (Invited will have this rank after proving they worth it)
Elite Member - see GChat, can chat in GChat, see some more Gbank Tabs, can withdrawn 1 slot from GBank, cannot deposit in GBank, can invite people. cannot kick people, can promote people up to members, cannot demote people (Members will have this rank after proving they worth it)
Officer - see GChat, see OChat, can chat in GChat, can chat on OChat, see all Gbank Tabs, can withdrawn 1 slot from GBank, cannot deposit in GBank, can invite people. can kick people, can promote people up to Elite Member, can demote people (Elite Members will have this rank after proving they worth it)
Banker - full GChat access, full OChat access, full Gbank Access, can invite people. can kick people, can promote people up to Officer, can demote people (Banker is the responsible of the GBank in all aspects)
General - full Gchat access, full OChat access, Gbank Access * 10, can invite people. can kick people, can promote people up to Officer, can demote people (Managers of the guilld)
Warchief - all access possible (Owner of guild)