Hi,

I've set up a workbook where I'm looking at Product Names on the Rows Shelf, Date on the Years Shelf, and Sales. 

I'd like to set up a filter on Product Names to include only products that begin with a certain value, for example, products that begin with the letter "R."  I have the Product Names field in the Filter box, but now sure how to set up the filter without manually checking/unchecking the products I want.  How would I go about doing this in Tableau?  Thank you