How do i make permissions for skywars ranks

Hi. I'm new to this server making but have already found out how to make a skywars game and lobby. But what i really want to do is make it so that one of my kits is accesible by only server moderators. I need to find out
- how to make ranks that can be used towards kits
- how to setup kits with a rank being only able to use that kit

If this will help, here is the groups.yml and users.yml file in my GroupManager plugin, along with my kits.yml file with 1 basic kit that i want so that only a server moderator can use

groups.yml:

Code:

# Group inheritance
#
# Any inherited groups prefixed with a g: are global groups
# and are inherited from the GlobalGroups.yml.
#
# Groups without the g: prefix are groups local to this world
# and are defined in the this groups.yml file.
#
# Local group inheritances define your promotion tree when using 'manpromote/mandemote'
groups:
  default:
    default: true
    permissions:
    - serversigns.use
    - skywars.join
    - skywars.leave
    - skywars.lobby
    - skywars.version
    - skywars.status
  Admins:
    inheritance:
    - default
    permissions:
    - '*'
    - skywars.setloby
    - skywars.setportal
    - skywars.cancel
    - skywars.cfgdebug
    - skywars.setup
    - worldedit.*
    - worldguard.*
    - multiverse.*
    - serversigns.*
    - essentials.*
    - serversigns.*
    prefix: '&0[&4Admins&0]&7 '
  Moderators:
    default: false
    permissions:
    - serversigns.use
    - skywars.join
    - skywars.leave
    - skywars.lobby
    - skywars.version
    - skywars.status
    - skywars.kit.Enchanter
    prefix: '&0[&4Mod&0]&7 '
users:
  Nightmare_Axel:
    group:
    - default

users.yml

Code:

users:
  20cfe82d-30fd-4500-9218-6796af074982:
    lastname: Mini_MinerGaming
    group: IceBerg
    subgroups: []
    permissions:
    - groupmanager.noofflineperms
  618fb7a2-8fc3-413a-9023-4d899afd94e2:
    lastname: Arctic_Foxy
    group: Glacier
    subgroups: []
    permissions:
    - groupmanager.noofflineperms
  93f4fd90-338c-4149-ae71-1516bc669e42:
    lastname: Nightmare_Axel
    group: groupmanager.default
    subgroups: []
    permissions:
    - groupmanager.noofflineperms

kits.yml

Code:

# ####### kits.yml #######
#
# Kit configuration
# #
# For documentation, please visit
# https://dabo.guru/projects/skywars/configuring-kits
# #########
configuration-version: 2
Enchanter:
  items:
  - type: ENCHANTMENT_TABLE
  - amount: 32
    type: EXP_BOTTLE
  - type: ENCHANTED_BOOK
  description: '&4A kit: &8Enchanter&4.'
  totem: ENCHANTMENT_TABLE
  permission: groupmanager.moderators

I hope you are able to help, i would appreciate it if we could make this happen