How do I obtain a username for an individual account?

How do I obtain a username for an individual account?

Hello - In trying to sign up for a Zoho personal account, I found the page where I enter my info - problem is, the example shows a space at the top where you enter a username, but the actual sign up page doesn't have that (at the top it has you entering a current email address, and nowhere to enter a username).  I did get signed up but want to use a zoho email address, such as myself@zohomail.com, not the aol address I gave as a contact.  Does this not exist any more or am I on the wrong page or...?  Thanks for any help you can give.