Mum has a simple remote, volume, channel up and down, on/off. It’s really hard for her to find her fav channels. There should be the option for visually impaired to hide channels
I hope this helps.
There is a facility to set up favourite channels on both TIVO and V6 boxes.
For a TIVO box
VM also offer a high contrast remote control and audio cues if you feel this will help your mum - details are on this page accessibility/virgin-tv