I am trying to create user rights in Typo3 7.6 so that a user can simply work as an editor. He has, for his department, a section of the page tree. In that he can almost exclusively create text & media. For a single subpage of this whole tree, it also requires the ability to create an HTML element.
From my personal logic, it would be sufficient to create a user group (A), with all the usual rights would be covered. So creating pages, texts and media. A second user group (B) then only with the explicit permission to create HTML elements. Under Access, I have selected the group in the entire page tree as a simple editor (A), under which one page may be on the HTML, but the second user group (B).
But now it seems that as soon as the user receives the group B, it is not only allowed to create HTML for the one page, but the entire page tree. What am I doing wrong? How is that otherwise thought?