Currently, there are two different MFA accounts that users at NSU can have: MFA for Office 365 and MFA for Citrix. Please be aware that setting up MFA for accessing the Citrix environment is a separate process from the one documented on this page. If you have MFA enabled on both your Citrix and Office 365 accounts, you will need to register twice: once using the method outlined on this page and again for the Citrix environment. You can use the same smartphone application (Microsoft Authenticator) to register both MFA accounts so that you don't have to worry about switching between apps to authenticate to the different applications.
Registration is a one-time process and only needs to be repeated if you change your mobile device.