You must join the server by pressing the button "Join the server" above and contact the staff, or the user that made the staff listing.
Searching for administrators, look up for server info on this website.
My server is about 6 months old now, it needs more activity and for that we are recruiting a staff team full of experienced moderators, administrators and events managers which will work for free. Apart from that i might hire them for moderating other servers, if they are suitable and reliable to be on the staff team. They can get chance to moderate for different youtubers as well. Feel free to dm me.