How to reduce moderate posts number per page

[vimarc]

In user CP you always need top open each post to check and moderate but in admin cp or mod cp all posts are automatically open and just need to edit heading or thread description then click on validate and made changes to save but only one thing that if you have more posts the page showing almost all post and it took lot of time to edit and save. this is the reason why i am looking to split into pagination for easy and fast moderation.