Two Domains with two different email adresses in Zoho Mail

Two Domains with two different email adresses in Zoho Mail

Hi, 

I have recently upgraded my Zoho Mail account because I would like to add a domain to my Zoho email, and also add a new email address.  Currently my email is hello@anitabrown3d.com which is for a different website.  I would like another email address hello@sketchuphub.com for my other domain.

Can you please advise how I do this?

Thanks,
Anita