Bukkit

PROFESSIONS
List of profession names that you want on the server.

professions:
  - engineer
  - medic
  - labourer
  - pilot
  - hunter
  
TIERS
List of tiers and their names that you want
Ensure that they are numbered from 0 to the maximum tier
maxLevel - the number of levels a player gains in that tier before
progressing to the next one.

tiers: 
  0:
    name: unskilled
    maxLevel: 1
  1:
    name: novice
    maxLevel: 20
  2:
    name: adept
    maxLevel: 40
  3:
    name: expert
    
OPTIONS
fatigue_time -  Time of the level-up cooldown in ticks 
(20 ticks = 1 second). Training and grinding are on seperate timers.
permission_prefix - the prefix to all permissions awarded for
professions. Format is [permission_prefix].[profession].[tier].
This is used to interface with other plugins that rely on 
permissions.
enable_training - set to false if you don't want players to be able
to train.
max_exp - the amount of experience earned before level-up.
claimable_tiers - the number of free tiers a new player can claim.
Set to 0 to disable this.
tier_cap - the total number of tiers a player may have in all 
professions. After they reach this point they gain no experience.
place_cooldown - exploit protection against repeatedly breaking and
placing blocks. This is the timer in ticks (20 ticks = 1 second).
Blocks broken before this timer is up yields no experience.

SLAYING
The amount of experience for killing each type of mob is configurable
Multiple professions may be defined. Mobs can appear under more than 
one profession.
Example configuration:
slaying:
  hunter:
    chicken: 1
    pig: 1
  pilot:
    sheep: 1
    cow: 1

This configuration awards 1 experience to hunters for killing
chickens and pigs, and 1 experience to pilots for killing sheep and
cows.
DAMAGE MODIFIER
The amount of damage a player deals is configurable.
Multiple professions and tiers may be defined. It can be required
that the player is holding a specific weapon.
Example configuration:

damageModifier:
  hunter:
    unskilled: 25
    novice: 50
    adept: 100
    expert: 150
    weaponReq:
    - DIAMOND_SWORD
    - IRON_SWORD
    - STONE_SWORD
    - WOOD_SWORD

This configuration will cause unskilled hunters to deal 25% the
damage they usually would, novices 50%, adepts 100% and experts 150%.
However, this modifier only applies if the player is holding any of
the items listed. For a list of items, view here:
https://hub.spigotmc.org/javadocs/bukkit/org/bukkit/Material.html
HEALING
Certain professions can be configured with the ability to heal
themselves and other players.
The item, profession, and tier required are configurable and there 
may be multiple.
For each profession and tier the amount to heal is configurable.
Any unlisted professions and tiers will be unable to heal.
Example configuration:

healing:
  paper:
    medic:
      novice: 2
      adept: 4
      expert: 6

In this configuration, medics can heal using paper. A novice heals
2HP, an adept heals 4HP, and an expert heals 6HP. 2HP = 1 heart.
Unskilled is not listed, so unskilled medics cannot heal.
RECIPES
The plugin can be configured to award experience when a player
crafts an item.
This feature is ONLY available if RecipeManager is installed.
This feature only applies to recipes specified in RecipeManager
configuration. The name of the custom recipe must match the name
given here.

Example RecipeManager configuration (1):
CRAFT Diode
@displayresult first
redstone + stained_clay:10 + redstone
= diode:0:1

This is a recipe with the name Diode.
Note: follow RecipeManager's instructions for creating your 
recipes in that plugin.

Example HorizonProfessions configuration (1):

recipes:
  engineer:
    diode: 5

This specifies that crafting the "Diode" recipe will award 5 
experience to engineers. Both plugins must be configured for this
to work.

Example RecipeManager configuration (2)

CRAFT Diode
@permission horizonprofessions.engineer.novice, horizonprofessions.engineer.adept, horizonprofessions.engineer.expert | <yellow>You're not sure how to make this. Perhaps a Novice Engineer could help you.
@displayresult first
redstone + stained_clay:10 + redstone
= diode:0:1
@permission horizonprofessions.engineer.novice
= diode:0:2
@permission horizonprofessions.engineer.adept
= diode:0:3
@permission horizonprofessions.engineer.expert

In this example, the recipe will only be craftable by engineers. 
A novice engineer will receive 1 diode, an adept engineer will 
receive 2 diodes and an expert engineer will receive 3 diodes.

This is made possible because Horizon Professions gives players 
permission nodes based on their tiers in each profession. The 
default permission node for your configuration is 
horizonprofessions.[profession name].[tier name]. However, the 
prefix can be changed to anything you want instead of 
"horizonprofessions".

This format is recommended if you wish to restrict recipes or 
provide extra boons to certain professions.
BREAK BLOCKS
Each block can be configured to only be broken by players with a
certain profession and tier. If the player has a tier HIGHER than
the requirement, they are permitted to break that block.
Multiple professions and tiers may be defined.
Each block should only appear once.
The plugin also awards experience for breaking the block.
Example configuration:

breakBlocks:
  labourer:
    novice:
      stone: 1
    unskilled:
      dirt: 1

In this configuration, only novice, adept, and expert labourers can
break stone (unskilled labourers can't). When a player breaks stone
they get 1 experience. Any labourer (unskilled and above) can break
dirt and they get 1 experience for doing so.
PLACE BLOCKS
Identical in concept and configuration to break blocks.
Example configuration:
placeBlocks:
  labourer:
    novice:
      potato: 1

In this configuration, only novice, adept and expert labourers can
plant potatoes. They get 1 experience for doing so.