Set the registered users usergroup to be moderated then make a new usergroup & set it with the permissions you want then set up new promotion that moves reg users to the new group after 10 posts.
To set permissions on registered users:
admincp ==> Usergroup manager ==> Registered Users ==> Follow Forum Moderation Rules ==> Set To No(This setting causes posts to be moderated)
Then make a new usergroup (Name It Whatever You Want) Full Member is what I use.
admincp ==> Usergroup manager ==> (Your New Usergroup) ==> Follow Forum Moderation Rules ==> Set To Yes(This allows posting with no moderation)
Then make a new promotion.
admincp ==> Usergroups ==> Promotions ==> Add New Promotion ==> (Settings for new promotion below)
Change the options noted in red leave default noted in blue.- Usergroup : Registered Users
- Reputation Comparason Type: Default
- Reputation Level : Default
- Days Registered : Default
- Posts : 10
- Promotion Strategy : Posts
- Promotion Type : Primary Usergroup
- Move Use to Usergroup : (Select whatever you named your new usergroup here).
Hope this helps you out any questions feel free.