Member Access / Security Settings
Building on the user access levels built into WordPress, WordPress for Toastmasters lets you assign a user to be an Administrator, Editor, Manager, Author, or Subscriber. An administrator has all access rights, but you can customize the other roles to determine whether, for example, regular users are allowed to use the Edit Signups features.
See the blog post Understanding User Access Levels in WordPress for Toastmasters for the basic, default scheme.
As an administrator, you can customize to access rights associated with each type of user on the Security tab of the Settings -> Toastmasters screen.