We are an official, first-tier club at our university. We figured that the best way to keep our game going was to make it official at second-tier (no funding) and eventually appeal for a promotion to first-tier to gain access to fundraising means, advertising and other publicity materials that official clubs on campus enjoy. It was a tedious process that began before I was even a freshman and ended with me getting our first student government-funded budget approved by our SGB in my senior year.
Because we are official, we have to play by the university's rules. Indoor play is off-limits, all doors (even emergency exits) are safe-zones, and all roads/parking lots are no-play zones. We contact our campus' police department once per semester to let them know when our game will be so they don't think we're terrorists running drills or something silly like that. When we have day-long events, we contact our rec sports department to make sure no field space is reserved.
For funding, we have to request funds based on the previous year's expenditures just like any other first-tier club. We are allowed and encouraged to do our own fundraising and we often do. We can circulate posters and other signage through the Student Involvement center and we have a table at the involvement fair every semester.
The scope of our club is strictly HvZ. We're not part of a NERF club or Urban Gaming club or anything like that. Our HvZ games run about 4 weeks per semester, so our hands are plenty full with just that. We've cooperated with other organizations by doing zombie-themed stuff at their events and we're looking to start doing more volunteering in the community.
Club leadership resembles most other campus clubs. We have a president and a VP that are NOT elected. Although we wrote it as an elected-ish position in our club constitution to please the student government, we made a loophole that states that when the President steps down, the VP finishes out that year as President and gets an entire term of his/her own. The President traditionally steps down right before graduating so we continue a cycle of VPs inheriting the position.
The President and VP are considered the top two positions in the club hierarchy. They decide when the games are played, how long they are, and they get the final say if a moderator's decision is appealed. They are in charge of exec. board meetings and organizing events and missions.
We also have a treasurer and parliamentarian defined in the constitution. Both are elected by club members. The parliamentarian simply drafts amendments and keeps the consitution. The treasurer is in charge of managing the club's account and proposing budgets to student government.
We also have moderators in addition to the previously mentioned executives. Moderators are appointed by and serve at the pleasure of the President. They are loosely defined in the constitution, so the amount of discretionary power they have is up to the current president. Some past presidents have allowed mods to discipline players for rule violations and some have restricted them only to judgement calls (does this tag count?, etc). Mods are experienced players who are important for demonstrating good sportsmanship/SotG to new players and they are involved in the mission-making process.
The only exec board members that answer to "higher powers-that-are" are the treasurer, President, and VP. The treasurer attends student government meetings to defend budget requests and the Pres/VP speak with Public Safety and a number of other administrative offices.
tl;dr: We are like any other official campus club, but we play HvZ. We have to play by their rules, but they give us money. Leadership structure resembles other clubs' but our Pres/VP are not elected.