Sorry, I'm not sure I fully understand your question ... can you please give more details ?
If you are an Alfresco administrator and can login to Share, then you can access the Share Admin Console to create users. Alternatively, there are various other options for creating users, such as using APIs or LDAP sync. You screenshot shows Alfresco 5.2.x (Community Edition) so you could also use the new People API, eg. Alfresco Content Services REST API Explorer