How to set up employees with sign on and password to EWS

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Looking to introduce the internal employee website to our entire organization and need to know how to set them up with a sign on and password.  Currently, I am the only one who has access.  Someone from Taleo orginally set me up and now I want to add more employees but don't know if this is something I do, or if Taleo needs to add them.  I am not talking about setting up users or the career's website; but our internal site.  Any help would be greatly appreciated.

Thanks,

Jennie Gerken