[PEX]Changing player ranks depending on what world they are in?

Hey, I want to set up my own faction server with mini games I have everything working or I know how to do everything. We have a hub and a world for the mini games and factions. But how can I make a group for the players so they can use the "Member" group in factions world and when they do /hub they go back to the default group "Hub" and the same with the rest of the worlds. Oh and how can I make it so when they do /spawn they dont go back to the /hub?
Also is there any more plugins I should add for my donors and things, that people would find fun?

groups:
Hub:
default: true
worlds:
world:
permissions:
- modifyworld.*
options:
build: true
prefix: '&1[&2&lHub&1]&f '
Member:
default: true
worlds:
Factions:
permissions:
- modifyworld.*
- essentials.rules
- essentials.help
- essentials.pay
- essentials.balance
- essentials.signs.use.sell
- essentials.signs.use.buy
- essentials.tell
- essentials.sell
- essentials.back
- essentials.back.ondeath
- essentials.who
- essentials.afk
- essentials.list
- essentials.msg
- essentials.warp.list
- essentials.warp
- essentials.helpop
- essentials.motd
- essentials.spawn
- essentials.home
- essentials.tpa
- essentials.tpahere
- essentials.tpaccept
- essentials.home
- essentials.sethome
- arena.leave
- arena.join.spleef
- essentials.sethome
- iConomy.payment
- iConomy.holdings
- iConomy.holdings.others
- iConomy.sell
- factions.join
- factions.create
- factions.disband
- factions.leave
- factions.help
- factions.title
- factions.relation
- factions.who
- factions.admin
- factions.power
- factions.claim
- factions.unclaim
- factions.description
- factions.mod
- factions.list
- factions.home
- factions.sethome
- factions.unclaimall
- factions.kick
- factions.invite
- factions.map
- factions.show
- factions.disband
- factions.chat
- mcmmo.ability.*
- mcmmo.skills.*
- ChestShop.buy
- ChestShop.sell
options:
build: true
prefix: '&1[&f&lMember&1]&f '
Worrier:
permissions:
- essentials.tpahere
- essentials.hat
- essentials.back
- essentials.back.ondeath
- essentials.nick
- essentials.signs.color
- essentials.shout
- essentials.me
- essentials.workbench
inheritance:
- Member
options:
build: true
prefix: '&1[&2&lWorrier&1]&f '
Knight:
permissions:
- disguisecraft.*
- smoketrail.use.off
- smoketrail.use.sparks
- smoketrail.use.fire
- essentials.feed
- essentials.ext
- essentials.nick
- ChestShop.shop.*
inheritance:
- Member
- Worrier
options:
build: true
prefix: '&1[&2&lKnight&1] &f '
Lord:
permissions:
- smoketrail.use.smoke
- smoketrail.use.magic
- essentials.sethome.multiple.3
- essentials.heal
- essentials.jump
- essentials.joinfullserver
- essentials.telepot.cooldown.bypass
- silkspawners.silkdrop
- silkspawners.place
inheritance:
- Member
- Worrier
- Knight
options:
build: true
prefix: '&1[&6&lLord&1] &f '
Titan:
permissions:
- smoketrail.use.ender
- smoketrail.use.heart
- smoketrail.use.music
- essentials.fly
inheritance:
- Member
- Worrier
- Knight
- Lord
options:
build: true
prefix: '&1[&1&lTitan&1] &f '
Emperor:
permissions:
- smoketrail.use.magma
- smoketrail.use.loot
- smoketrail.use.crit
- silkspawners.craft.*
- essentials.god
inheritance:
- Member
- Worrier
- Knight
- Lord
- Titan
options:
build: true
prefix: '&1[&c&lEmperor&1] &f '
God:
permissions:
- smoketrail.multi
- smoketrail.use.sweat
- smoketrail.use.flowers
- essentials.lightning
- silkspawners.changetype
inheritance:
- Member
- Worrier
- Knight
- Lord
- Titan
- Emperor
options:
build: true
prefix: '&1[&4&lGod&1]&f '
Devastator:
permissions:
- smoketrail.use.*
- essentials.fireball
- silkspawners.changetypewithegg
inheritance:
- Member
- Worrier
- Knight
- Lord
- Titan
- Emperor
- God
options:
build: true
prefix: '&3&l&ka&b&ka&1[&4&lDEVASTAROT!&1]&b&ka&3&l&ka&f '
Helper:
permissions:
- disguisecraft.*
- essentials.tempban
- essentials.kick
- essentials.kick.notify
- essentials.mute
- ezwarnings.warn
- ezwarnings.clear
- ezwarnings.set
- ezwarnings.view
- essentials.invsee
inheritance:
- Member
options:
build: true
prefix: '&1[&6Helper&1]&f '
Moderator:
permissions:
- essentials.tempban
- essentials.heal
- essentials.feed
- essentials.ban.notify
- essentials.banip
- essentials.clearinventory
- essentials.eco.loan
- essentials.ext
- essentials.getpos
- essentials.helpop.recieve
- essentials.home.others
- essentials.invsee
- essentials.jails
- essentials.jump
- essentials.kick
- essentials.kick.notify
- essentials.mute
- essentials.realname
- essentials.signs.create.*
- essentials.signs.break.*
- essentials.time
- essentials.protect.alerts
- essentials.protect.admin
- essentials.protect.ownerinfo
- essentials.togglejail
- essentials.top
- essentials.unban
- essentials.unbanip
- essentials.whois
- essentials.world
- somketrail.use.*
inheritance:
- Member
options:
build: true
prefix: '&7|&3 Mod&7 | '
Admin:
permissions:
- essentials.gamemode
- essentials.tp
- essentials.ban
- essentials.god
- essentials.invsee.edit
- hub.bypass
- worldedit.*
inheritance:
- Member
- Worrier
- Knight
- Lord
- Titan
- Emperor
- God
options:
build: true
prefix: '&1[&4&lA&6&ld&e&lm&2&li&b&ln&1] &f '
Owner:
permissions:
- '*'
options:
build: true
prefix: '&1[&4&lOwner&1]&f '

 

Use pastebin.com to post your configs, errors, and permissions files. Posting them raw on the forums just makes them useless by destroying the formatting.

You're talking about per-world permissions, which you can find right here. Don't give them (or negate if they inherit) essentials.spawn and they won't be able to use the /spawn command on the restricted world(s).