Umm, but fields do not have records. Records have fields so I must assume that "category field has 4 records" means that your category field's value list has 4 values...
Tab controls really only display data for a single record or contain portals to related tables that list multiple records in a portal to a related table.
So if you have only one table, your basic set up has problems.
You can set up 4 buttons--each that performs a find for a different category.
Thanks for the response,
Yes, my terminology is off, intro to filemaker is going on a few days now. Yes Cat field has 4 values.
Can the find be preformed automatically?
hmmm, I better go back and do some of the tutorials, I am obviously getting ahead of myself here.
Finds can be scripted. Here are some examples: Scripted Find Examples
But finds are not your only option. It depends on what you want to do with this layout. You could set up related tables and portals and each tab in your tab control can be a portal that shows a different category listed in the portal on that tab. Other options are also possible.