For this you need to setup roles and assign them to user groups. This group when they log in will have access to only the classes or areas you want them to. Its worth having a play around with what works and what does not. Below is a basic setup for an editor that allows them to login, use the eZ HTML editor, search and change all cotnent in the site. You will what to refine this but it should get you going.
user login *
ezdhtml * *
search * * content * *
Found in the http://mysiteadmin/role/list
Further reading: http://ez.no/ez_publish/documentation/customization/a_note_on_access_control_management_in_ezpublish_3
-- tony
Tony Wood : twitter.com/tonywood
Vision with Technology
Experts in eZ Publish consulting & development
