Controls For Entering Information In Tabbed Forms.

I'm not a complete Access beginner, but I'm also far from an expert and not much of a programmer. So I feel that there's a chance this might be a relatively simple issue I'm merely making more complicated than it should be. But hopefully someone can at least point me in the right direction. (For the record, I'm using Access 2007.)

I've created a form to which I've added three tabbed pages. Each of these pages contains a subform the user can use to enter data into three different tables. The tables' relationships look to be set up properly, and there doesn't seem to be a problem with typing the information into the subforms. However, I want a single button press to update the information across all the tables and clear all the fields in the subforms so that the user can then go about entering the next person. I can't seem to figure out how to do this.

I downloaded a number of template databases from Microsoft, and some of them have exactly the kind of functionality I'm looking for: a "Save and New" button that inputs all the data across the tabbed pages and then lets the user start over from scratch with blank forms. I've spent a fair amount of time studying the various forms in the Student template, but I'm having absolutely no luck replicating that functionality. I basically want everything to work almost exactly the same as that, except with different field and table names (of course).

Can someone please explain what I'm doing wrong and how I might fix things, or at the very least how to look at the Students template database to get the information I need on how to do this myself? I'd be very grateful for any help on this matter. Thanks.