According to the documentation on the plugin:
"Multiple entries for different levels of VIP can be created here. The default and included entry is for nteleportation.vip. Others added here will cause the plugin to register Oxide permissions for them upon plugin reload. After the permissions have been created, they can be assigned to oxide users or groups as desired."

HOW???

I have gone through other threads on this forum, some say you can only have one level, others said you can set up multiples. I followed every example I saw, and none of them work. If I add ANY additional vip level like nteleportation.vip2, the plugin says the config file is corrupt and loads a default one, destroying all my changes in the process! Can this actually be done? If so, how??

Try (my example) your variation (vip names)
},
"Home": {
"Homes Limit": 10,
"VIP Homes Limits": {
"nteleportation.spaz": 11,
"nteleportation.newbie": 12,
"nteleportation.noob": 13,
"nteleportation.learner": 14,
"nteleportation.provisional": 15,
"nteleportation.hardcore": 16,
"nteleportation.professional": 17,
"nteleportation.maximus": 18,
"nteleportation.megamaximus": 19,
"nteleportation.ultramaximus": 20,
"nteleportation.supermaximus": 21,
"nteleportation.primomaximus": 22,
"nteleportation.grandmaximus": 23,
"nteleportation.absolutemaximus": 24,
"nteleportation.getalifemaximus": 25
},
"Allow Sethome At Specific Monuments": [
"HQM Quarry",
"Stone Quarry",
"Sulfur Quarry"
],
"Allow Sethome At All Monuments": false,
"Allow Sethome On Tugboats": true,
"Allow TPB": true,
"Cooldown": 20,
"Countdown": 5,
"Daily Limit": 5,
"VIP Daily Limits": {
"nteleportation.vip": 75
},
"VIP Cooldowns": {
"nteleportation.vip": 5
},
"VIP Countdowns": {
"nteleportation.vip": 5
},
"Location Radius": 25,
"Force On Top Of Foundation": false,
"Check Foundation For Owner": true,
"Use Friends": true,
"Use Clans": true,
"Use Teams": true,
"Usable Out Of Building Blocked": false,
"Usable Into Building Blocked": false,
"Usable From Safe Zone Only": false,
"Allow Cupboard Owner When Building Blocked": true,
"Allow Iceberg": true,
"Allow Cave": true,
"Allow Crafting": false,
"Allow Above Foundation": true,
"Check If Home Is Valid On Listhomes": false,
"Pay": 0,
"Bypass": 0,
"Hours Before Useable After Wipe": 0.0
},
"TPT": {
"Use Friends": false,
"Use Clans": false,
"Use Teams": false,
"Allow Cave": false,
"Enabled Color": "green",
"Disabled Color": "red"
},
"TPR": {
"Play Sounds To Request Target": false,
"Teleport Request Sound Effects": [
"assets/prefabs/missions/portal/proceduraldungeon/effects/disappear.prefab"
],
"Play Sounds When Target Accepts": false,
"Teleport Accept Sound Effects": [
"assets/prefabs/missions/portal/proceduraldungeon/effects/appear.prefab"
],
"Require Player To Be Friend, Clan Mate, Or Team Mate": false,
"Allow Cave": true,
"Allow TPB": true,
"Use Blocked Users": false,
"Cooldown": 10,
"Countdown": 5,
"Daily Limit": 5,
"VIP Daily Limits": {
"nteleportation.spaz": 6,
"nteleportation.newbie": 7,
"nteleportation.noob": 10,
"nteleportation.learner": 15,
"nteleportation.provisional": 20,
"nteleportation.hardcore": 25,
"nteleportation.professional": 30,
"nteleportation.maximus": 35,
"nteleportation.megamaximus": 40,
"nteleportation.ultramaximus": 45,
"nteleportation.supermaximus": 55,
"nteleportation.primomaximus": 60,
"nteleportation.grandmaximus": 70,
"nteleportation.absolutemaximus": 75,
"nteleportation.getalifemaximus": 75