5 Members of my Amazon Household + 5 Spotify Family Plan Profiles

[Lucky13F]

Plan

Premium Family

My Question or Issue

I have 5 members in my Amazon Household.

I have 5 Profiles in my Spotify Family Plan.

Everyone has their own Echo Device.

I am certain there must be some way for each of us to be listening to our own profile simultaneously.

For example - when I say "Alexa, play Led Zeppelin" my Echo Devices are all set to Spotify as the Default so they reply:

"Shuffling Songs by Led Zeppelin on Peter's Spotify"

There must be a way for my daughter Mia - who has her own Spotify Profile and her own Echo dot to say:

"Alexa, shuffle songs by Billie Eilish"

And then have it reply:

"Shuffling songs by Billie Eilish on Mia's Spotify"

And thus - we can be in 2 separate rooms on 2 separate devices and both choosing our own music.

But I need specific steps -- I'm not smart enough to follow otherwise.

Can someone please help?

Thanks a million in advance.

Device

Amazon Echo / Dot / Alexa

[Normskii]

So I have been reading loads of forums and am really confused about the family plan/Alexa.  For the answers on the other forums it says to create a Amazon/Alexa Household - this however can only have 2x adult accounts. 

I have 3 children each with their own Alexa devices.  I see Amazon US can add Teen accounts however in the UK I can only have child accounts and as such no linking email address to each device.  

How can I get 5 Spotify Family accounts to play on 5 seperate Alexa devices?  
Do I have to have 1x Spotify family & 1x Amazon account on each device.

If this is he case I presume the household features would not be possible (ie drop in etc) as the devices will be signed in to seperate accounts?