How To Delegate Freeze Authority?

[R-K-H]

Hello,

I have a question related to the locking of certain NFTs behind the FreezeAccount method using this package. My use case would be to lock assets for a group of investors who purchased assets pre-mint. As well as locking assets during mint, but then unlocking those who minted outside of presale upon completion.

I've seen the wonderful diagrams produced metaplex-foundation/metaplex-program-library#470 (comment) here.

I still have some questions as to how one might freeze tokens or update the freeze authority to be able to do so. There are a number of accounts generated with CM2 of which I'm unsure which maps to which address space when building the transaction.

Is it that the OWNER of the token account (NFT) can assign a delegate or is there the ability of the creator of the collection to freeze certain token accounts post mint action? How might someone go through the process of updating the Freeze Authority?

I've been unable to locate specifically the case where when someone mints that token is frozen and then being able to programmatically thaw certain token accounts by owner.

I see approveDelegateAuthority and freezeDelegatedNft and just wondering which of the CM2 accounts to use in which place as described in diagrams.