Basilisk V3 scroll mode bind function missing

I started using the beta and saw that the option to rebind one of the buttons on my Basilisk V3 to switch between free scroll and tactile is missing. Instead the only option I'm left with if I want the use the free scroll is the smart-reel function. The option is to bind scroll mode switching to another button is there on Synapse 3, it's missing on the beta.