Roku sells a rechargeable Voice Remote Pro that has two buttons that can each learn one voiced command.
Its four direct-access channel buttons are hard coded and cannot be changed. Their inclusion is paid for by their respective channels.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X