migrations from google workspace and wix domain

Question

We have a domain, mycompany.com, that is managed by wix. I tried to follow instructions and created a subdomain, ms365.mycompany.com, and verified it on both the Google side and Microsoft side.

I am now lost as I don't see anything about MX records or CNAME. I could change those on wix, but it seems to only allow me to do that for the main domain, mycompany.com. in the 365 admin console, I seem to only be able to add TXT records to any added domain, even when verified.

Any guidance would be great.