setup two multi-domain subdomain networks on the same cpanel account?

I know this has been asked a gazillion times but I'm having trouble finding the concise explanation.

How do you setup two multi-domain subdomain networks on the same cpanel account?

I have one subdomain network setup with multi-domains & domain mapping, with parked domains. works great.

mainsite.com
anothersite1.mainsite.com = anothersite1.com
anothersite2.mainsite.com = anothersite2.com

I tried adding another network to an addon domain.
newnetwork.com is an addon to mainsite.com (mainsite.com is the cpanel account). I did a new database and installed WP in the root of newnetwork.com. Admin seems to work fine creating sites and adding multi-domains and domain mapping, however it isn't redirecting.

newnetwork.com
onemoresite1.newnetwork.com = onemoresite1.com
onemoresite2newnetwork.com = onemoresite2.com

PROBLEM: browsing to onemoresite2.com goes to mainsite.com
(newnetwork.com does browse to newnetwork.com)

in WHM I parked onmoresite2.com on top of newnetwork.com, but it didn't have any affect.

Something to do with parked, addons, or DNS? but don't know what to do. I have VPS and these are my domains so can do whatever is needed.

Thanks in advance for advice