Portfolio Template Settings

On the portfolio Template…. I know there’s a way to “exclude gallery categories” in the portfolio template settings…

but is there a way to only include certain categories/tags on the “portfolio template page”??

Or is there a way to decide which “categories/tags” that the portfolio template page sorts by?

For Example.. i have a portfolio that might have 5 tags.. but i only want to allow sorting by 2 of the tags..if i exclude the other 3 tags the portfolio disappears…

Thanks!