Master account controls explicit content for their profiles with no switching capability

I have four children (boys) that range from 16 to 3. They all love music, but the temptation to listen to explicit music is one that is hard to manage. I joined the family plan hoping we can control and educate our kids so they can make strong and positive choices with music streams.

Deezer offers the best "gating" capacity than any other service. However it falls short when allowing profiles to switch to other profiles, and even change their own explicit settings. So now my 12 year old can easily switch to listen to some pretty perverse lyrics.

I'm proposing Deezer do 2 things:

1. Allow for individual logins (because my 16 year will eventually move out and I'm sure he will want his own account)
2. Allow for the master to control the explicit settings and pass down to other accounts.

Thank you.