in ver 1.6.6. Ive created a group for editing and creating pages only (group permissions: "Add Pages" and "Remove Pages"). Then Ive assigned a user of this group to specified pages - not as owner but as additional editor.
Now the problems:
When the author wants to edit or create pages theres no "Options" Tab. Also when creating pages I get an error "Alias must be all letters and numbers".
Whats the problem here?
Edit:
Ok..got it

in Site Admin -> Global Settings -> Advanced Setup -> Basic Properties
assigned Page-Alias .