Here was my manual workaround to run a Kato N Scale 20605 Unitrack Automatic 3 Color Signal on my DCC layout. It’s not a perfect solution, but it’s the only solution I can think of until Kato solves this directly on the board.
Below are links to the Toggle Switch and Flux Paste I used.
Mini Momentary Toggle Switch, 6Pcs 3 Terminal 3 Position Rocker Toggle Switch, MTS-123 SPDT (ON)/Off/(ON)
https://smile.amazon.com/gp/product/B08BR9788N/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
RA Rosin Flux Paste
https://smile.amazon.com/MG-Chemicals-Rosin-Paste-Amber/dp/B01MS04SO4/ref=sr_1_6?dchild=1&keywords=resin+flux+safe+for+electronics&qid=1613700868&s=industrial&sr=1-6