using checkbox to update multiple records for order processing

Hi there, I have attached a page that Im trying to add a multiple record update using checkboxes, Not sure if it wont work because the checkbox is outside the form...but had to do this as i have a second form for searching and thought it would go wrong to put it inside the main update form.

So my question is, what steps do I need to take in order to get this page to work?
The functionality of the page is as follows:
1. Form for Searching the records on the page.
2. Using Repeating Table to alternate record css colour.
3. The Form to update record consists of "Ordering Processes, such as Processing, Order Dispatched, Kit Recieved, Kit Delivered and Order Complete)

Ive applied the Form for updating records outside the repeating table for alternating css colours

and in my page layout the search form is alinged to the right and the record update form is aligned to the left.

I guess I am just confused how the whole updating multiple records using checkboxes actually work.

Edit: If I were to put the table that includes the checkboxes inside the updateform then when I click the form submit button even if i just select 1 checkbox it will ignore that and update ALL records.

Please help me :)

Chris