User blog comment:- MHCaboose -/Monster Hunter Frontier Z Discussion/@comment-27125903-20170405171345/@comment-31679603-20170406042322

You'll be able to carve four different spots typically, total carves will vary depending on what spots you want to carve and what skill set you have on your carving set.

You can assume at least 30k HP a phase, subject to def rate etc. for actual HP.

You can solo the phase quests if you feel so inclined, you need four people signed up to actually make the quests available at the desk but you can go on it solo after the ravi starts.