After you left click New Items, a dropdown menu will open.Once you are logged into the Skype for Business application, open outlook.Once the program is open, input your FAU email address into the Sign-in address field then press Sign in.Using Skype for Business through outlook for contacting out of network users Once they accept that chat request you will be able to conatct the user. Once you press Other Contacts a request will be sent to the out of network user.Once the user's skype appears, right click their profile then hover your mouse over Add to Contacts List then left click Other Contatcs.Type the name or email of the out of network user into the search bar.Once the dropdown menu opens, hover over Add a Contact Not in My Organization then click on Skype.To add an out of network user, click the 'Add a contact' p under the search bar. You will be logged in after inputting your credientials.Find the Skype for Business desktop app and open it.Using Skype for Business for contacting out of network users Below is a step-by-step walk through on how to utilize Skype for Business

Set up skype meeting in outlook web app