Add TrueYou Duo information.

content/accounts/setting_up_and_using_duo.md

@@ -4,7 +4,7 @@ description = "Duo Setup Instructions"
 weight = "8"
 +++
 
-##### Use of Duo two-factor authentication (https://www.duosecurity.com) is required for access to HCC resources.
+##### **Use of Duo two-factor authentication (https://www.duosecurity.com) is required for access to HCC resources.**
 
 Users will connect via SSH and enter their username/passwords as usual. One additional
 authentication step through Duo is then needed before the login is completed. This 
@@ -22,6 +22,8 @@ smartphone or purchase a YubiKey USB device.
 
 ### Smartphone
 
+If you *are not* currently using Duo with your TrueYou account:
+
 1.  Install the free **Duo Mobile** application from the
     [Google Play Store](https://play.google.com/store/apps/details?id=com.duosecurity.duomobile), [Apple App Store](https://itunes.apple.com/us/app/duo-mobile/id422663827), or [Microsoft Store](https://www.microsoft.com/en-us/store/apps/duo-mobile/9nblggh08m1g)
 2.  Visit one of the following locations.  **Bring your smartphone and a valid photo ID** such as your university ID card or drivers license.
@@ -36,6 +38,13 @@ number to enroll, please email
     {{< icon name="envelope" >}}[hcc-support@unl.edu] (mailto:hcc-support@unl.edu)
     with a time you will be available.
 
+If you *are* currently using Duo with your TrueYou account:
+
+1.  You can request to use the same phone for HCC's Duo as you are using for TrueYou.
+    Please contact [hcc-support@unl.edu] (mailto:hcc-support@unl.edu) with the request
+    using the email address associated with your TrueYou account. In the email, include
+    the last 4 digits of the phone number for verification.
+
 ### YubiKeys
 
 YubiKey devices are currently a one-time cost of around $25 from HCC, or can be