A community's founder is automatically given admin and bureaucrat rights during the community's creation. This allows them to edit the community's skin and format. As more contributors join, it's a good idea for founders to appoint trusted users as admins, Content Moderators, Discussion Moderators, and rollbacks.
Administrators (also known as "admins" or "sysops") are trusted users, who are generally chosen by the community and also have access to the following rights:
All privileges from the Discussions Moderator and Content Moderator groups.
Block users who are vandalizing the wiki from editing and other actions.
Grant and revoke both the Chat Moderator and Discussion Moderator rights.
The state of being an administrator is also referred to as "adminship".
Bureaucrats are one level 'up' from administrators. Bureaucrats only have the ability to manipulate user rights, as well as block and unblock users, so this right is generally used in addition to the administrator group.
They have the ability to promote and revoke rollback, Content Moderator and administrator rights as well as appointing new bureaucrats. While they cannot directly revoke another user's bureaucrat status, they can revoke their own. Bureaucrats also have the ability to revoke a user's bot status in case the bot is malfunctioning, but community consensus is required for the addition of users' bot status.
For you to become an administrator, someone who's a bureaucrat status must make you one. Please drop your admin request on the Forum and follow the rules on there. Note that you cannot get it just for asking for it. You would have to prove you are invaluable for this wiki if you have administrator abilities.
Administrators should not use their administrator powers to settle editing disputes; for example, to lock a page on a version he or she prefers in an editing dispute that isn't vandalism. Administrator powers should be used to help keep the wiki clear of vandalism, spam, and users who make malicious edits, but not for simple disagreements between users acting in good faith. Ideally an admin shouldn't be considered "in charge". The ideal admin is just someone who is trusted to have a few extra buttons and to use them for the benefit of the Wikia community.