How to create a folder in a team shared folder and make it accessible to a small part of the team

Hi, thanks again for your help but I have two questions.

1. When I try to share a non-existing folder, i get this error instead of it creating like you said :

{
    "error_summary": "no_permission/...",
    "error": {
        ".tag": "no_permission"
    },
    "user_message": {
        "locale": "en",
        "text": "You don’t have permission to perform this action."
    }
}

2. despite removing the access inheritance of the folder, my team still have a folder on their dropbox explorer of that folder. It doesn't disappear.