Step 1 - In bonehelper.mac replace "Wizname" with your Wizard / Druids character name on lines 3, 32, and 67.
Step 2 - Drop the brellsrest.ini file into your MacroQuest2/MQ2AdvPath folder.
Step 3 - Bind your Wiz/Dru at Xelha in East Freeport.
Step 4 - Have 10x Extraplanar Trade Satchels on each of your characters you are turning in Bone Chips on, and be sure they are completely empty. Also make sure the characters have a little plat, 2-3k is plenty.
Step 5 - Fire up bonewiz.mac on your Wizard (if using a Druid, you might need to edit the Alt Act number in the macro for Teleport Bind, I'm not sure if it's the same as Wizards). Make sure your Brell's Rest port is in spell gem 11 (or edit the macro to adjust the spell gem number). You should specify how many characters you are powerleveling when you start the mac. For example, if you are powerleveling 2 characters, you'd do /mac bonewiz 2
Step 6 - Fire up bonehelper.mac on the characters you're leveling.
Step 7 - Manually port the group to Brell's Rest, both macros will take over from there.
The Wiz and characters will path from Brell's Rest zone in to the vendor and fill bags with bonechips. When they are full, Wiz will port them to east freeport. Once in freeport, they'll all drop group and do the turn ins. When they are done turning in, they'll get a group invite from Wiz, and Wiz will port back to Brell's Rest to start the cycle again. I've ran this for several hours at a time without issue, but I make no promises. Also, it's not hard for someone passing through Brell's to see what you are up to, so use at your own risk.
Also note - This might not work until MQ2AdvPath is fixed. The last update to the plugin broke it.