Hi Carolynheenan,
Thanks for your post and welcome to the forums. It's great having you on board with us 
In order for both the TiVo® and the V6 to work, you will need to have both boxes active on the account. If you don't already then give the team a call on 150 / 0345 454 1111. They can add the 2nd box on for you.
Come back and let us know how you get on.
Thanks,