I will be changing my connection to BT using FTTP and I am looking for help with the settings below.

1. Settings for wan2 to too work with Openreach ONT
2. Settings for VOIP with BT, this may not be doable but any info would be appreciated.
Thanks.

BT FTTP is just a standard pppoe setup with username and password the same as all other BT connections ie bthomehub@btbroadband.com / bt (username/password).
I dont believe the VOIP side of it can be used with anything other than BT hub, unless of course you mean a standalone VOIP service, in which case contact the supplier of that service.