Go to his profile page - across the top click on the EDIT tab.
Then scroll down the right - and choose (add spouse)
Fill in the form for his wife and save.
On either of their pages - you can then click on the EDIT tab scroll the right side and click (add child)
As you add children there will be a check box to mark -for profile of the other parent on their entry data page.
It might be less confusing for you to add the children from the mother's page and click the Artie is the other parent button.
Make sure you click SAVE at the bottom for each person.