Hi there, so i did setup of Wordpress Multisite on my cPanel server. It took a long time so i think i may share how i did it if anyone bothers to read my bad english.
This is about Wordpress Multisite installation (one wordpress which allows having in its directory multiple wordpresses on subdomains).
So first step is to set your domains nameservers at your domain registar. When done i created cpanel account named on one of my domains.
Second step - i installed Wordpress multisite script.
Third step, i modiffied DNS Zone for my cpanel account (thru cPanels WHM) main domain name and added: new A recod, with IP of my server site and name: "*" (im not sure if its a good step, but this step may ensure subdomains working ok..) I think following step will be sufficing when its addon domain multisite, not subdomain multisite):
Fourth step, login to your cpanel user account and go to Addon Domains. Add all your domains one by one while modiffying their directories from /public_html/domainname.com to /public_html only.
Fifth step (probably not necessary) but i added subdomain with name "*" and pointing again into /public_html - this may ensure that if you select wordpress multisite to create subdomains, they will be automatically hopefully created and be accessible.
This was hard to read manual and i hope its bug free, if you have anything to say, please post, thank you