Create A Forum - Support Forums

I am an Admin of a forum. I would like to set up a thread for only invited people can participate (view, reply...) others can not see the content. Is there any option that I can create a thread like that in my forum.

Thank you for your help!

There is not an option. you can do a is a private board then add members to a special group.

Thank you CreateAForum for your response.

Would you please show me how to create and add members to a special group? Other Admin or Global Moderators still can see that private board?

Again, thank you for your help.

Admin -> Membergroups -> add membergroup.

Thank you CreateAForum.
Have a good evening!