I'm looking to simplify the backend for users. My editors will have the ability to edit existing pages but not create any new ones.

When I set this up though, the user is still shown a tempting green "Add new" button at the top of the page. When they click this it seems to work and takes them on to an "add page" dialogue where they can make some choices, and finally when they click "Create" they eventually get a message saying "Forbidden".

I can't see why we are giving users a button that leads to a forbidden action. Is there some way to remove this for my editors?

OK... I have found a solution. I used this neat little extension that hides the history tab, and I've just extended the functions that were blocked:

https://github.com/g4b0/silverstripe-hide-history

I am now using it to load a modified css file for everyone except admin. General users no longer see the history tab, the "add new" button, the "edit tree" button and the "multi-selection" button.

I ended up using a combination of approaches. I had been modifying the side menu by adding items and changing the styling with css. So I decided to just set up an "add new page" link on the side menu where it only displays for me. Then I have removed all the unnecessary buttons on the main panel.

In case anyone's interested, I've attached some images to show how my simplified CMS looks for the user and the admin.

On the side menu I have added a link to view the site, and also links to email us directly for support or go to our website. I can set the main colours of the cms to tie in with the front end theme.