Hello, I need a extension which make it possible for user to create a thread in a tag which only could read team member. I need it for an application tag. I'm Okay with a paying.

Can you describe better what you're trying to achieve? With this vague description it sounds like you can do this using the core permissions and restricting the application tag to your "Team Member" group.

    Yeah but you have to set the guys who can see the thread manuelly. I want that every post in a sub tag can just be seen by an admin or mod. But User should be able to create it. The permission with create and see MUST be splitted in two parts. Just the own post or all posts. That's what I need

    I'm currently working on a project that does something similar, contact me on the Discord channel when you have the time and we can discuss this further