windows authentication for multiple user in same domain

I want all the users from same domain name: XYZ to access my application below is my code.

<system.web>
<compilation debug="true" targetFramework="4.0" />
<authentication mode="Windows" />
<authorization>
<allow users="XYZ\HOW TO GRANT ACCESS TO ALL THE USERS HERE?" />
<deny users="*" />
</authorization>
<identity impersonate="true" />
</system.web>