Begin by entering your account information via https://signon.stjohns.edu/
You will then locate and click on the Office 365 tile within your My Apps page (circled in yellow below):
Next, on the left-hand side of the page, locate and click on Apps (circled in yellow below):
Available applications will populate in the window. You will then locate and click on the MS Teams icon (circled in yellow below):
MS Teams will open in a new window. On the upper right hand corner locate and click on the ellipsis (circled in yellow below):
A small window will appear, select Get the desktop app (circled in yellow below):
Once the application has downloaded and installed, you will be prompted to enter your SJU information. This will log you into your MS Teams account.