Adding a 2nd domain help, please

Hi All,

I have got as far as adding the Server IP Address (domain mapping) without much bother, but then when I come to add the new domain I can’t work out what to do.

So in Network settings > domains
there are 2 boxes to add text, below the “New Domain” heading

Site ID

Domain

Plus “primary” tick box

Where do I go from here, ie how do I add my 2nd domain ?

Many Thanks in advance

JD

https://ww.wp.xz.cn/plugins/wordpress-mu-domain-mapping/