help setting up password management system

I have been trying this with Lastpass but failing miserably on almost all counts. Can anyone with any lastpass, keepass, password manager, etc. experience answer any of the following?

1. I am trying to share a cloud DB of passwords and sites with multiple team members
2. they need to be able to add and edit links and folders
3. it would be a nice bonus to be able to have a separate "personal" folder that would stick with a user even if he left the company and lost access to the shared data?