How to add only a (sub) capacity to an user role?

It’s stupid, but you can’t. (Not without editing core, anyway.) Right at the top of the nav-menus.php source code is an edit_theme_options check that’s not filterable.

http://core.trac.wordpress.org/browser/tags/3.4.1/wp-admin/nav-menus.php

If you’re not concerned about your editors trying anything too shady, you could simply hide the menu items using a plugin like Adminimize or Admin Menu Editor.

Of course, you could also open a ticket at http://core.trac.wordpress.org/ to try to get the core devs to change this.

Related Posts:

  1. Prevent or Disable creating new users or changing roles of existing users to Administrator
  2. Applying roles to an admin sub-menu (eg Appearance -> Menus)
  3. MySQL error 1449: The user specified as a definer does not exist
  4. Allow member to have access to custom post type only. Permission to only edit their own posts
  5. WP in Docker – cannot install plugin or upgrade WP
  6. when FS_METHOD = ‘direct’ is chosen?
  7. Create custom permissions for user type
  8. WordPress REST API – Permission Callbacks
  9. Add Custom User Capabilities Before or After the Custom User Role has Been Added?
  10. Can’t upload images due to permissions error
  11. Recommended File Permissions
  12. What’s the difference between the permissions “edit_published_posts” and “edit_posts”
  13. Wrong permissions when uploading a file through WordPress | IIS
  14. ftp_nlist() and ftp_pwd() warnings
  15. Remove admin bar for subscribers
  16. Restrict users on multisite WordPress install
  17. What permissions should i have set up for the Database User after i have WordPress set up?
  18. Why is group ownership with rwx permissions not enough?
  19. How to filter the role selector?
  20. How can I limit WordPress editor roles to a specific category?
  21. WordPress Multisite Layered Admins
  22. Editor and contributor roles not correct after adding function
  23. Reapproval for edits and deletion after post is published
  24. Is there a simple way to manage capabilities per user?
  25. Safe to set permissions to 757 temporarily to update via wp-cli?
  26. Can I create users that have access to *some* other users posts instead of all other users posts?
  27. Set default page for user account in admin
  28. How to remove sticky post capability for a specific user role?
  29. Does WordPress have fine-grained view permissions?
  30. How can I have different groups of editors only allowed to edit certain parent+subpages?
  31. Remove wordpress author’s capability to moderate comments on their own posts
  32. Can you set a role as author?
  33. can’t change footer
  34. permissions access error
  35. wordpress editor role remove all but ‘menus’ in appearance menu
  36. Permissions Issue with WordPress
  37. What user/group does WordPress belong to in terms of file permissions?
  38. Enable plugin installs without FTP with user from same group as Nginx/PHP-fpm
  39. Roles for Custom Post Types
  40. Moved my WordPress site and now it can’t read the theme
  41. WordPress folder ownership issues
  42. WordPress unable to create folders even though correct NTFS-rights are set
  43. allow non logged in user to upload images in media library
  44. WordPress php mysql errors – errcode: 13 permission denied
  45. Invalid changeset UUID WordPress
  46. Group ownership permissions don’t allow web server to update WordPress content
  47. Should Apache own /var/www/domain.com directory in WordPress?
  48. custom user role wordpress – grant guest access to edit.php without insert/update/delete
  49. WordPress Permissions on my Local with Docker
  50. Permissions in a Local Dev Environment (OS X)
  51. Running WordPress as FTP user?
  52. How to to secure WordPress file and folder permissions
  53. Featured image not working, because of custom user role?
  54. how to remove some permissions from a shop “manager role” in woocommmerce?
  55. wp-content Folder Permissions (777 OK?)
  56. How to prevent plugins from being uninstalled
  57. Reseting file permissions
  58. What is the “user account” for WordPress’ file permissions?
  59. Restrict access to trash, only admin
  60. How to hide wordpress error message?
  61. What is this error message?
  62. User Capabilities are not available in WP REST permission callback?
  63. Does it matter if the very first user, usually Admin, does not have a user ID of 1?
  64. Make a single page in WordPress available only for Admin and Subscribers
  65. How to grant user access the page [closed]
  66. Groups and subgroups for permission
  67. Preventing role reading others posts
  68. solution to prevent specific admins from altering site contents
  69. User Roles: How to hide a plugin from showing in WP-Admin?
  70. Auto-Update Fails
  71. See which user role / capability is needed to use a plugin
  72. How to make file not open to public but javascript file under WordPress folder can load it
  73. Allow Editor access to a certain plugin
  74. Visitors “do not have permission to view this content” on home page only
  75. Permissions Script Not Working
  76. WordPress does not have the permission to update (IspConfig)
  77. Blank White page issue in WordPress
  78. Permissions working but not working
  79. Mamp Pro File Permissions
  80. Create a custom “you dont have permission” message
  81. Front-end submitted post is published with admin ID as author
  82. WP_Query: Query posts only if their access is restricted to logged user’s role
  83. How to put WordPress website behind the credential for visitors?
  84. User Permissions on custom post type
  85. Downloaded WP but Nginx home page still showing
  86. WordPress install checking permissions of user id 0
  87. Public and Private keys incorrect for user
  88. Force “submit for review” on update?
  89. sufficient permissions to access this page
  90. Admin Post List Only Show One Category
  91. Restrict access to specific content
  92. Authors can edit all posts, except when an owner is specified?
  93. the_tags only showing when logged in?
  94. Configuring WordPress permissions for easy updates
  95. Plugins Page – “Page disabled by the administrator”
  96. How to give access to programmer/developer to make changes, but prevent undesirable changes? [closed]
  97. How to give access to the particular page in wordpress for specific username/email NOT roles [closed]
  98. WordPress files owner changed silently
  99. How might I enable a user to view Draft pages from a different Author, without the ability to edit?
  100. WP Permission still set to Not Writable after I change the permission for the whole folder and files