Understanding new w-4

Hello, I was going to update my w-4 to get more money on paychecks, when I noticed it no longer asked for deductions. I originally filed 5 deductions on the old forms and still get a large refund on my taxes. How do I fill it out now to get more in pocket and less in refund. I am married, filling jointly, single job with 4 children all under 17.