Authorized button or feature use

Hi everyone,
I am trying to give access to a button for only authorized users.  These users are all apart of the domain's administrative users.  The button should only appear to these users.  Other users will not be able to see or access the button.  Anyone have any idea of how I could make my web application query for authorized users for certain features in the web app?  Any help would be fantastic.  Thanks.
Matt 
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