@raejen
While in the Roku Channel guide, you can type in the channel numbers if you are using the official Roku Remote app available in the Play/Apple stores for mobile devices. (you can either type using the app's keyboard feature or use the voice feature and say the channel number or name).
Additionally, if you have a Roku Voice Remote, you can use the Voice feature (microphone icon), and similarly just say the channel number or channel name while in the Roku Channel guide to quickly navigate to that channel.
For reference purposes, created a Roku Channel guide for users (https://community.roku.com/t5/Channel-Issues-Questions/Roku-Channel-Live-TV-Guide-List-Reference-Lis...).
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102