Addon domain settings on cloudflare?

#1

I have a primary domain and would like to know my addon domain dns settings that I use on cloudflare. Do I need to use all of the CNAME settings to point the primary domain? Should I point all CNAME entries to the addon domain? If not, which CMANE should I point to the add on domain and to leave with the primary domain?

Thanks,
Sean

#2

What other settings should I use for the primary domain such as A settings?

Thanks again,
Sean

#3

Have you already reviewed and replicated all steps outlined here: