Spotify Family via Turkey - Do anything different?

I think it's time I stopped paying full UK price for Spotify Family. Looking at the recently published guide in HUKD Mag, is there anything I should do differently for family accounts? For example, do they all need to be registered to the same Tukey address?

Also - Can I use my existing Spotify account, or need to sign up a new one as per the guide? Seems that would use a slot I would rather give to a family member.

Thanks