CAF refers to a "cafeteria plan" or section 125 plan. This is an employer benefit that lets you choose between several tax-deferred benefits, if they are qualified, from your employer.
TRS is listed in Box 14 for informational purposes only. You can add it in and choose Other, or not enter it. Either option is the same. These contributions are post-tax and don't impact your tax return in any way.
Employers can put just about anything in box 14; it's a catch-all for items that don't have their own dedicated box on the W-2.
In TurboTax, enter the description from your W-2's box 14 on the first field in the row. Enter the dollar amount and select the correct tax category that goes with that description.
If none of the categories apply, scroll to the bottom of the list and choose Other–not on above list. Don’t worry. We'll figure out if it impacts your return or not. If we need more information, we'll ask you later in the interview.
Please feel free to post any additional details or questions in the comment section.