Help regarding DNS setup

[dibun]

I have the following DNS setup

1. I am using Dnsmasq as described here https://getflix.zendesk.com/hc/en-gb/articles/201056954-Can-I-selectively-use-Getflix-DNS-servers-for-specific-domains- to forward Netflix request to Getflix DNS servers and it is working fine

I want to achieve the following

1. Since I have kids at home, how can I do the following? For kids devices, All Netflix traffic goes via Getflix DNS and the rest of the traffic goes via OpenDNS or Bind DNSBL?

2. For adults devices, it goes via ISP's DNS servers and adblockers in Bind DNSBL

I tried Netflix domain overrides in Unbound but that didn't work but it works in Dnsmasq. I searched in the forum but didn't find any relevant material.

Thanks in advance