InfoPath Dev

I would like to add a button to my attached form that the person filling it out would click to "Check Errors".  The errors I need it to check is to make sure the fields, "Total % of Time for Job Functions" and "Total Weight Factor Percentage" both equal 100.  Any advice on how I can do this?  Thank you

The easy option is to add Validation to the fields. I'm assuming that you cannot do that for whatever reason - perhaps you don't want to display any warnings to the user until the person clicks.

Here's a form with an example of how to show a dialog conditioned on the sum. Hope it helps.