Need help with access level settings - Joomla! Forum - community, help and support

hello

i need setting access level on site. have 4 parent main menu item , want put restrain rules. let's called them this

• item a
• item b
• item c
• item d

i need doing this
• a) public member – can't see content inside items.
• b) registered member – sees content inside item , d
• c) item b member – sees content inside item a, b, d
• d) item c member – sees content inside item a, c, d
• e) item b,c member – sees everything

i tried everything, deleting groups, creating new ones etc etc..