How can I make Bixby snap photos?

[Android Central Question]

Bixby button is located where the volume button down was on earlier versions. That volume down button was perfect for snapping photos quickly with one hand. Bixby button has taken over that location in S9+. How can I make the Bixby button snap photos? Internet querry results tout bxActions app, but that app only opens the camera app; it will not snap photos like the volume button (which is now located so that your finger gets in the photo when you try to take a photo with the volume button.