Each admin group can be assigned different rights to view, edit, publish, and delete pages in Composer, and these rights can be modified on three levels: global, page, and branch.
Before an admin group can edit pages, ensure that "Composer" is enabled on the group’s Admin settings.
"Global" permissions are set per admin user group. These are the default rights that admins in this group have to edit pages on the website.
It's a good idea to only grant "Edit"-level rights to admin users who are actually responsible for editing site pages. Many admins have other responsibilities that don't impact the front-end of the website, and those users don't necessarily need to have page editing privileges.
On the main Composer menu, select "Permissions." Choose default levels for each admin group under "Pages" and select "Update."
Permission levels are explained in Defining Composer permission levels.
You may want to override the default Global permissions for a page or group of pages, to restrict them from general admins, or to allow only certain users to edit them.
To change from the default permissions for a specific page, navigate to that page and select the "Settings" icon from the Composer bottom bar.
Select the "Permissions" tab on the Page Settings window that pops up.
Find the admin group whose permissions you want to change, and choose the new setting from the dropdown menu.
Note that some entries on the dropdown menu are gray and cannot be selected. This is because a child page can never be set to have more-restrictive Permission settings than its parent pages. If a page is set to "View, Edit & Publish," for example, then any of its child pages must have that same permission level (or higher) applied, as well. You will not be able to select a lower permission level when editing permissions on that child page.
Permission modifications for one page that restrict access rights for an admin user group will automatically be applied to any child pages, as well.
Permissions can also be applied to an entire branch of the site. Hover over the desired branch and choose the Settings option.
Go to the Permissions tab there, and adjust the levels in the same way as page-level permissions. Permissions set at the branch level will apply to all of the pages in that branch.
Combining Permissions Settings
For more information about assigning page-specific access permissions to a specific admin group, refer to Set admin permissions for editing specific pages.