protecting document with multiple passwords

Hi all,

I have recorded a macro and added this to a button on the document. I was wondering if it will be possible that each user who works on the document can use a specific password to unlock cells and autolock once document is saved. I have a seperate document that has the users and their specific passwords on.

I have gone through the forum and cannot fined something to help me. Can some one please help me

can any one help me?