NodeBB Categories/classification/Forum classification
Can we specify certain user groups to browse?
Or is there permission control for a certain post, where only those who meet certain conditions can browse it?
NodeBB论坛版块，能指定某些用户组浏览嘛？
或者某个帖子有权限控制，只有满足一定条件才能浏览？
满足等级、回复、付费等条件，才能浏览
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