Ok guys im waiting for some things in the API to be updated so in the mean time i made this plugin
What it does is auto level up your players by the online time you set
First you need to make the groups and set the permissions
Next you need to add my plugin to your plugin folder and unzip then delete the zip, you should have the AutoLevels folder with the AutoLevels.jar file inside
This plugin is a server admin only tool
Commands
/listgroups <------- to list all added groups
/closegroups <------- close's the group list panel
/delgroup [id] <-------- to delete a group example /delgroup 7 <----- will delete the group with id 7
/addgroup [groupname] [TimeStart] [TimeEnd] <-------- to add your group
/grouphelp <-------- for in game help
So to add levels you type in chat /addgroup [Groupname] [TimeStart] [TimeEnd]
Note: your Group name must be 100% the same as your permissions group name, this plugin wont work if the group Admin name is admin on this and Admin on your permissions file name, both will need caps oO
Some Example's
Example: /addgroup Surveyor 0 3600 < this group would be set when the player first logs in upto 1 hour, note all times are done in seconds
Example: /addgroup Settler 3601 7200
Example: /addgroup Builder 7201 14400
Example: /addgroup Plumber 14401 28800 Note how i always start with the last end number + 1
Example: /addgroup Moderator 28801 57600
Example: /addgroup Admin 57601 8888888 ok i added a big number here as this is the last group oO
Example: /addgroup SuperAdmin 0 0 <------ by adding 0 0 the player can be locked to this group
As always if you use and like my plugins do click like down below 
if you have a lockup do reloadplugins command in the console
