I can help with this one!
The red button streams appear as "Bonus Streams" around 30 mins before kick off, and don't commence broadcast until about 5 mins before kick off. There's no replays and the commentary is a bit drab, so iFollow always a better option for me but I'll take NowTV for the most part. You can find them right at the bottom of the home screen.
Another caveat is that the "Bonus Streams" are only available on select devices:
- NOW Smart Stick & Boxes (except the NOW Smart Box with Freeview)
- Roku boxes and streaming players
- YouView box
- Apple TV HD (4th gen) or 4K
- Amazon Fire TV Stick (2nd & 3rd Gen, 4K, Lite & Basic Edition)
- PS4
- PS5
- Xbox One
- Xbox Series X/S
- LG or Samsung Smart TV
- JVC Fire TV Edition Smart 4K TV.
So if you don't have one of those you're SOL!