I would like a category where everyone can create topics but only members of a selected group can reply

I only see permissions for

create / reply / see
reply / see
see

I would like something like this:

everyone -> create / see
group-members -> create / reply / see

How does one achieve this?

You can’t using the existing set of permissions.

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Is there a way to create new permissions?

Not unless you write your own plugin.

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You could have them create them in one category and then the users who can reply would move them to the category where they’ll discuss them.

Another solution might be a category that requires approval, but I’m not sure if there’s a way to do that.

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I’m interested to know if there can be a category that requires approval to access too.

In the category settings you can check a box to require approval for all new topics

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