InfoPath Dev

Hello All! I have a form that has 8 tables on it. Each table reflects a category and series of questions pertaining to the category. Is there a way I can hide the tables when I'm not filling them out and then show them when I'm ready to fill them out? Thanks for any advice!

I have a drop down list that supplies N/A, Yes, or No. I have assigned each a point value so I can keep a talley. My problem is I need N/A and Yes to have the same point value. I assign the same point value for each in the drop down list properties--> data tab. The only problem is when N/A is selected, after the drop down list looses focus ...