I can't create more mails

I can't create more mails

Hi Zoho,

Recently I purchased the standard 10GB.
In order to organize my emails I need create 2 o 3 mails, but I don't know how should I make. 

Could you explain me how to do it ? 

Should I create more users?? I only purchase one license because im the only one who will use it.

Best regards,