Hi Youcef! Perhaps this post is better suited to dev list! :-) Please, read below.
  ________________________________________
 From: users-bounces(a)xwiki.org [users-bounces(a)xwiki.org] On Behalf Of Bey Youcef
[youcef.bey(a)gmail.com]
 Sent: 06 April 2013 19:51
 To: XWiki Users
 Subject: [xwiki-users]  Registration validation
 Hi All,
 I'm facing a problem with changing configuration of registration/validation
 method.
 Here is the scenario that I'm attempting to make without succes.
 When a new user make registration I would like that an Administrator User
 receive an Mail, in which, there is a link for validation the account of
 the user. After making this validation, the user receives an email for
 informing him that the validation is done and his account is accessible.
 What currently XWiki propose, is when a new user make registration, she/he
 receives an email for validating her/his new account; the validation is
 done by her/himself
 Anyone could hlep or lead me to the documentation? I would like to know if
 this can be  by just configuation in preferences or it whether it need
 progmming stuffs to do.
 
Even though I'm not a programmer myself, I've tracked down verification code in an
old 2.4 XE release and reach this code file...
https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwi…
Lines 3058 to 31987 deals with the idea you are talking about. It seems to me that it is
hardcoded and some development will be required to accomplish what you are seeking.
In an updated release where this monolithic module has been exploded into smaller
submodules, each handling a specific concern, it seems to me that this function is still
in the same location. I can guess it is still pending the reorganization of this section
of code, but I'm not a source of authority for this!
Perhaps some more experienced people can help us to understand how the future is planned
for this particular feature as it would be really welcome to be able to designed user
validation processes as the one you are proposing.
Please, take also into account this other XWiki development's pillar: Jira issue
tracking system at 
http://jira.xwiki.org/
Hope this helps!
Ricardo
  Thanks you in advances.
 Best regards
 Youcef BEY
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