roxrex
That would be functionality from within the apps you're using. That means that to quickly go to a different channel within the Spectrum app, that would be determined by Spectrum.
I don't have and have never used Spectrum, so I can't speak to that. I've used Xfinity's app in the past, and know that they do have channel numbers, and users can easily open an on-screen form to enter a channel number. So, I know it's possible to have something like that, as I've used something like that, but if Spectrum has it, I don't know.
Your best bet would be to get the information from Spectrum, as they built the app. Others here may have used the app (I suspect many have) and may be able to offer guidance on the functionality Spectrum built into the app.