Despite claims to the contrary Joomla 1.5 does have an ACL system. It may be rudimentary but when fully understood can be very useful.
To help you here is a simple table with an overview of who can do what.
Front-end Groups | Back-end Groups | |||||||
---|---|---|---|---|---|---|---|---|
Un- registered | Registered | Author | Editor | Publisher | Manager | Administrator | Super- Administrator | |
View "public" content | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
View "registered" content | - | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
View "special" content | - | - | Yes | Yes | Yes | Yes | Yes | Yes |
Create new content | - | - | Yes | Yes | Yes | Yes | Yes | Yes |
Edit own content | - | - | Yes | Yes | Yes | Yes | Yes | Yes |
Edit all content | - | - | - | Yes | Yes | Yes | Yes | Yes |
Publish new content | - | - | - | - | Yes | Yes | Yes | Yes |
Access the Admin page | - | - | - | - | - | Yes | Yes | Yes |
Create new users | - | - | - | - | - | - | Yes | Yes |
Install extensions | - | - | - | - | - | - | Yes | Yes |
Change the template | - | - | - | - | - | - | - | Yes |
Change site settings | - | - | - | - | - | - | - | Yes |