Domain Mapping On WordPress Multisite

Hey there

First of all, in order to use custom domains that you will be mapping to subsites, you will need the domain mapping plugin installed and set up correctly:

https://www.ads-software.com/plugins/wordpress-mu-domain-mapping/

You will want to make sure your sites are pointed to your hosting server via A record or CNAME (whatever your host calls for) Hope that helps to get you started. Not sure how great this guide is but it sounds like this may help too:

https://fronterahouse.com/blog/ultimate-wordpress-multisite-domain-mapping-tutorial/

Good luck

What is your webhost?